(function(global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
		typeof define === 'function' && define.amd ? define(factory) :
		(global.wangEditor = factory());
}(this, (function() {
	'use strict';

	/*
	    poly-fill
	*/

	var polyfill = function() {

		// Object.assign
		if (typeof Object.assign != 'function') {
			Object.assign = function(target, varArgs) {
				// .length of function is 2
				if (target == null) {
					// TypeError if undefined or null
					throw new TypeError('Cannot convert undefined or null to object');
				}

				var to = Object(target);

				for (var index = 1; index < arguments.length; index++) {
					var nextSource = arguments[index];

					if (nextSource != null) {
						// Skip over if undefined or null
						for (var nextKey in nextSource) {
							// Avoid bugs when hasOwnProperty is shadowed
							if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
								to[nextKey] = nextSource[nextKey];
							}
						}
					}
				}
				return to;
			};
		}

		// IE 中兼容 Element.prototype.matches
		if (!Element.prototype.matches) {
			Element.prototype.matches = Element.prototype.matchesSelector || Element.prototype.mozMatchesSelector || Element
				.prototype.msMatchesSelector || Element.prototype.oMatchesSelector || Element.prototype.webkitMatchesSelector ||
				function(s) {
					var matches = (this.document || this.ownerDocument).querySelectorAll(s),
						i = matches.length;
					while (--i >= 0 && matches.item(i) !== this) {}
					return i > -1;
				};
		}
	};

	/*
	    DOM 操作 API
	*/

	// 根据 html 代码片段创建 dom 对象
	function createElemByHTML(html) {
		var div = void 0;
		div = document.createElement('div');
		div.innerHTML = html;
		return div.children;
	}

	// 是否是 DOM List
	function isDOMList(selector) {
		if (!selector) {
			return false;
		}
		if (selector instanceof HTMLCollection || selector instanceof NodeList) {
			return true;
		}
		return false;
	}

	// 封装 document.querySelectorAll
	function querySelectorAll(selector) {
		var result = document.querySelectorAll(selector);
		if (isDOMList(result)) {
			return result;
		} else {
			return [result];
		}
	}

	// 记录所有的事件绑定
	var eventList = [];

	// 创建构造函数
	function DomElement(selector) {
		if (!selector) {
			return;
		}

		// selector 本来就是 DomElement 对象，直接返回
		if (selector instanceof DomElement) {
			return selector;
		}

		this.selector = selector;
		var nodeType = selector.nodeType;

		// 根据 selector 得出的结果（如 DOM，DOM List）
		var selectorResult = [];
		if (nodeType === 9) {
			// document 节点
			selectorResult = [selector];
		} else if (nodeType === 1) {
			// 单个 DOM 节点
			selectorResult = [selector];
		} else if (isDOMList(selector) || selector instanceof Array) {
			// DOM List 或者数组
			selectorResult = selector;
		} else if (typeof selector === 'string') {
			// 字符串
			selector = selector.replace('/\n/mg', '').trim();
			if (selector.indexOf('<') === 0) {
				// 如 <div>
				selectorResult = createElemByHTML(selector);
			} else {
				// 如 #id .class
				selectorResult = querySelectorAll(selector);
			}
		}

		var length = selectorResult.length;
		if (!length) {
			// 空数组
			return this;
		}

		// 加入 DOM 节点
		var i = void 0;
		for (i = 0; i < length; i++) {
			this[i] = selectorResult[i];
		}
		this.length = length;
	}

	// 修改原型
	DomElement.prototype = {
		constructor: DomElement,

		// 类数组，forEach
		forEach: function forEach(fn) {
			var i = void 0;
			for (i = 0; i < this.length; i++) {
				var elem = this[i];
				var result = fn.call(elem, elem, i);
				if (result === false) {
					break;
				}
			}
			return this;
		},

		// clone
		clone: function clone(deep) {
			var cloneList = [];
			this.forEach(function(elem) {
				cloneList.push(elem.cloneNode(!!deep));
			});
			return $(cloneList);
		},

		// 获取第几个元素
		get: function get(index) {
			var length = this.length;
			if (index >= length) {
				index = index % length;
			}
			return $(this[index]);
		},

		// 第一个
		first: function first() {
			return this.get(0);
		},

		// 最后一个
		last: function last() {
			var length = this.length;
			return this.get(length - 1);
		},

		// 绑定事件
		on: function on(type, selector, fn) {
			// selector 不为空，证明绑定事件要加代理
			if (!fn) {
				fn = selector;
				selector = null;
			}

			// type 是否有多个
			var types = [];
			types = type.split(/\s+/);

			return this.forEach(function(elem) {
				types.forEach(function(type) {
					if (!type) {
						return;
					}

					// 记录下，方便后面解绑
					eventList.push({
						elem: elem,
						type: type,
						fn: fn
					});

					if (!selector) {
						// 无代理
						elem.addEventListener(type, fn);
						return;
					}

					// 有代理
					elem.addEventListener(type, function(e) {
						var target = e.target;
						if (target.matches(selector)) {
							fn.call(target, e);
						}
					});
				});
			});
		},

		// 取消事件绑定
		off: function off(type, fn) {
			return this.forEach(function(elem) {
				elem.removeEventListener(type, fn);
			});
		},

		// 获取/设置 属性
		attr: function attr(key, val) {
			if (val == null) {
				// 获取值
				return this[0].getAttribute(key);
			} else {
				// 设置值
				return this.forEach(function(elem) {
					elem.setAttribute(key, val);
				});
			}
		},

		// 添加 class
		addClass: function addClass(className) {
			if (!className) {
				return this;
			}
			return this.forEach(function(elem) {
				var arr = void 0;
				if (elem.className) {
					// 解析当前 className 转换为数组
					arr = elem.className.split(/\s/);
					arr = arr.filter(function(item) {
						return !!item.trim();
					});
					// 添加 class
					if (arr.indexOf(className) < 0) {
						arr.push(className);
					}
					// 修改 elem.class
					elem.className = arr.join(' ');
				} else {
					elem.className = className;
				}
			});
		},

		// 删除 class
		removeClass: function removeClass(className) {
			if (!className) {
				return this;
			}
			return this.forEach(function(elem) {
				var arr = void 0;
				if (elem.className) {
					// 解析当前 className 转换为数组
					arr = elem.className.split(/\s/);
					arr = arr.filter(function(item) {
						item = item.trim();
						// 删除 class
						if (!item || item === className) {
							return false;
						}
						return true;
					});
					// 修改 elem.class
					elem.className = arr.join(' ');
				}
			});
		},

		// 修改 css
		css: function css(key, val) {
			var currentStyle = key + ':' + val + ';';
			return this.forEach(function(elem) {
				var style = (elem.getAttribute('style') || '').trim();
				var styleArr = void 0,
					resultArr = [];
				if (style) {
					// 将 style 按照 ; 拆分为数组
					styleArr = style.split(';');
					styleArr.forEach(function(item) {
						// 对每项样式，按照 : 拆分为 key 和 value
						var arr = item.split(':').map(function(i) {
							return i.trim();
						});
						if (arr.length === 2) {
							resultArr.push(arr[0] + ':' + arr[1]);
						}
					});
					// 替换或者新增
					resultArr = resultArr.map(function(item) {
						if (item.indexOf(key) === 0) {
							return currentStyle;
						} else {
							return item;
						}
					});
					if (resultArr.indexOf(currentStyle) < 0) {
						resultArr.push(currentStyle);
					}
					// 结果
					elem.setAttribute('style', resultArr.join('; '));
				} else {
					// style 无值
					elem.setAttribute('style', currentStyle);
				}
			});
		},

		// 显示
		show: function show() {
			return this.css('display', 'block');
		},

		// 隐藏
		hide: function hide() {
			return this.css('display', 'none');
		},

		// 获取子节点
		children: function children() {
			var elem = this[0];
			if (!elem) {
				return null;
			}

			return $(elem.children);
		},

		// 获取子节点（包括文本节点）
		childNodes: function childNodes() {
			var elem = this[0];
			if (!elem) {
				return null;
			}

			return $(elem.childNodes);
		},

		// 增加子节点
		append: function append($children) {
			return this.forEach(function(elem) {
				$children.forEach(function(child) {
					elem.appendChild(child);
				});
			});
		},

		// 移除当前节点
		remove: function remove() {
			return this.forEach(function(elem) {
				if (elem.remove) {
					elem.remove();
				} else {
					var parent = elem.parentElement;
					parent && parent.removeChild(elem);
				}
			});
		},

		// 是否包含某个子节点
		isContain: function isContain($child) {
			var elem = this[0];
			var child = $child[0];
			return elem.contains(child);
		},

		// 尺寸数据
		getSizeData: function getSizeData() {
			var elem = this[0];
			return elem.getBoundingClientRect(); // 可得到 bottom height left right top width 的数据
		},

		// 封装 nodeName
		getNodeName: function getNodeName() {
			var elem = this[0];
			return elem.nodeName;
		},

		// 从当前元素查找
		find: function find(selector) {
			var elem = this[0];
			return $(elem.querySelectorAll(selector));
		},

		// 获取当前元素的 text
		text: function text(val) {
			if (!val) {
				// 获取 text
				var elem = this[0];
				return elem.innerHTML.replace(/<.*?>/g, function() {
					return '';
				});
			} else {
				// 设置 text
				return this.forEach(function(elem) {
					elem.innerHTML = val;
				});
			}
		},

		// 获取 html
		html: function html(value) {
			var elem = this[0];
			if (value == null) {
				return elem.innerHTML;
			} else {
				elem.innerHTML = value;
				return this;
			}
		},

		// 获取 value
		val: function val() {
			var elem = this[0];
			return elem.value.trim();
		},

		// focus
		focus: function focus() {
			return this.forEach(function(elem) {
				elem.focus();
			});
		},

		// parent
		parent: function parent() {
			var elem = this[0];
			return $(elem.parentElement);
		},

		// parentUntil 找到符合 selector 的父节点
		parentUntil: function parentUntil(selector, _currentElem) {
			var results = document.querySelectorAll(selector);
			var length = results.length;
			if (!length) {
				// 传入的 selector 无效
				return null;
			}

			var elem = _currentElem || this[0];
			if (elem.nodeName === 'BODY') {
				return null;
			}

			var parent = elem.parentElement;
			var i = void 0;
			for (i = 0; i < length; i++) {
				if (parent === results[i]) {
					// 找到，并返回
					return $(parent);
				}
			}

			// 继续查找
			return this.parentUntil(selector, parent);
		},

		// 判断两个 elem 是否相等
		equal: function equal($elem) {
			if ($elem.nodeType === 1) {
				return this[0] === $elem;
			} else {
				return this[0] === $elem[0];
			}
		},

		// 将该元素插入到某个元素前面
		insertBefore: function insertBefore(selector) {
			var $referenceNode = $(selector);
			var referenceNode = $referenceNode[0];
			if (!referenceNode) {
				return this;
			}
			return this.forEach(function(elem) {
				var parent = referenceNode.parentNode;
				parent.insertBefore(elem, referenceNode);
			});
		},

		// 将该元素插入到某个元素后面
		insertAfter: function insertAfter(selector) {
			var $referenceNode = $(selector);
			var referenceNode = $referenceNode[0];
			if (!referenceNode) {
				return this;
			}
			return this.forEach(function(elem) {
				var parent = referenceNode.parentNode;
				if (parent.lastChild === referenceNode) {
					// 最后一个元素
					parent.appendChild(elem);
				} else {
					// 不是最后一个元素
					parent.insertBefore(elem, referenceNode.nextSibling);
				}
			});
		}
	};

	// new 一个对象
	function $(selector) {
		return new DomElement(selector);
	}

	// 解绑所有事件，用于销毁编辑器
	$.offAll = function() {
		eventList.forEach(function(item) {
			var elem = item.elem;
			var type = item.type;
			var fn = item.fn;
			// 解绑
			elem.removeEventListener(type, fn);
		});
	};

	/*
	    配置信息
	*/

	var config = {

		// 默认菜单配置
		menus: ['head', 'bold', 'italic', 'underline', 'strikeThrough', 'foreColor', 'backColor', 'link', 'list',
			'justify', 'quote', 'emoticon', 'image', 'table', 'video', 'code', 'undo', 'redo'
		],

		colors: ['#000000', '#eeece0', '#1c487f', '#4d80bf', '#c24f4a', '#8baa4a', '#7b5ba1', '#46acc8', '#f9963b',
			'#ffffff'
		],

		// // 语言配置
		// lang: {
		//     '设置标题': 'title',
		//     '正文': 'p',
		//     '链接文字': 'link text',
		//     '链接': 'link',
		//     '插入': 'insert',
		//     '创建': 'init'
		// },

		// 表情
		emotions: [{
				// tab 的标题
				title: '默认',
				// type -> 'emoji' / 'image'
				type: 'image',
				// content -> 数组
				content: [{
					alt: '[坏笑]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/50/pcmoren_huaixiao_org.png'
				}, {
					alt: '[舔屏]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/40/pcmoren_tian_org.png'
				}, {
					alt: '[污]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/3c/pcmoren_wu_org.png'
				}, {
					alt: '[允悲]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/2c/moren_yunbei_org.png'
				}, {
					alt: '[笑而不语]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/3a/moren_xiaoerbuyu_org.png'
				}, {
					alt: '[费解]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/3c/moren_feijie_org.png'
				}, {
					alt: '[憧憬]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/37/moren_chongjing_org.png'
				}, {
					alt: '[并不简单]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/fc/moren_bbjdnew_org.png'
				}, {
					alt: '[微笑]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/5c/huanglianwx_org.gif'
				}, {
					alt: '[酷]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/8a/pcmoren_cool2017_org.png'
				}, {
					alt: '[嘻嘻]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/0b/tootha_org.gif'
				}, {
					alt: '[哈哈]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/6a/laugh.gif'
				}, {
					alt: '[可爱]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/14/tza_org.gif'
				}, {
					alt: '[可怜]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/af/kl_org.gif'
				}, {
					alt: '[挖鼻]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/0b/wabi_org.gif'
				}, {
					alt: '[吃惊]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/f4/cj_org.gif'
				}, {
					alt: '[害羞]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/6e/shamea_org.gif'
				}, {
					alt: '[挤眼]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/c3/zy_org.gif'
				}, {
					alt: '[闭嘴]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/29/bz_org.gif'
				}, {
					alt: '[鄙视]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/71/bs2_org.gif'
				}, {
					alt: '[爱你]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/6d/lovea_org.gif'
				}, {
					alt: '[泪]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/9d/sada_org.gif'
				}, {
					alt: '[偷笑]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/19/heia_org.gif'
				}, {
					alt: '[亲亲]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/8f/qq_org.gif'
				}, {
					alt: '[生病]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/b6/sb_org.gif'
				}, {
					alt: '[太开心]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/58/mb_org.gif'
				}, {
					alt: '[白眼]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/d9/landeln_org.gif'
				}, {
					alt: '[右哼哼]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/98/yhh_org.gif'
				}, {
					alt: '[左哼哼]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/6d/zhh_org.gif'
				}, {
					alt: '[嘘]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/a6/x_org.gif'
				}, {
					alt: '[衰]',
					src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/af/cry.gif'
				}]
			}
			// , {
			//     // tab 的标题
			//     title: '新浪',
			//     // type -> 'emoji' / 'image'
			//     type: 'image',
			//     // content -> 数组
			//     content: [{
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/7a/shenshou_thumb.gif',
			//         alt: '[草泥马]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/60/horse2_thumb.gif',
			//         alt: '[神马]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/bc/fuyun_thumb.gif',
			//         alt: '[浮云]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c9/geili_thumb.gif',
			//         alt: '[给力]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/f2/wg_thumb.gif',
			//         alt: '[围观]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/70/vw_thumb.gif',
			//         alt: '[威武]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6e/panda_thumb.gif',
			//         alt: '[熊猫]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/81/rabbit_thumb.gif',
			//         alt: '[兔子]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/bc/otm_thumb.gif',
			//         alt: '[奥特曼]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/15/j_thumb.gif',
			//         alt: '[囧]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/89/hufen_thumb.gif',
			//         alt: '[互粉]'
			//     }, {
			//         src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c4/liwu_thumb.gif',
			//         alt: '[礼物]'
			//     }]
			// }, {
			//     // tab 的标题
			//     title: 'emoji',
			//     // type -> 'emoji' / 'image'
			//     type: 'emoji',
			//     // content -> 数组
			//     content: '\ud83d\ude05 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?  ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?'.split(/\s/)
			// }
		],

		// 编辑区域的 z-index
		zIndex: 10000,

		// 是否开启 debug 模式（debug 模式下错误会 throw error 形式抛出）
		debug: false,

		// 插入链接时候的格式校验
		linkCheck: function linkCheck(text, link) {
			// text 是插入的文字
			// link 是插入的链接
			return true; // 返回 true 即表示成功
			// return '校验失败' // 返回字符串即表示失败的提示信息
		},

		// 插入网络图片的校验
		linkImgCheck: function linkImgCheck(src) {
			// src 即图片的地址
			return true; // 返回 true 即表示成功
			// return '校验失败'  // 返回字符串即表示失败的提示信息
		},

		// 粘贴过滤样式，默认开启
		pasteFilterStyle: true,

		// 对粘贴的文字进行自定义处理，返回处理后的结果。编辑器会将处理后的结果粘贴到编辑区域中。
		// IE 暂时不支持
		pasteTextHandle: function pasteTextHandle(content) {
			// content 即粘贴过来的内容（html 或 纯文本），可进行自定义处理然后返回
			return content;
		},

		// onchange 事件
		// onchange: function (html) {
		//     // html 即变化之后的内容
		//     console.log(html)
		// },

		// 是否显示添加网络图片的 tab
		showLinkImg: true,

		// 插入网络图片的回调
		linkImgCallback: function linkImgCallback(url) {
			// console.log(url)  // url 即插入图片的地址
		},

		// 默认上传图片 max size: 5M
		uploadImgMaxSize: 100 * 1024 * 1024,

		// 配置一次最多上传几个图片
		// uploadImgMaxLength: 5,

		// 上传图片，是否显示 base64 格式
		uploadImgShowBase64: false,

		// 上传图片，server 地址（如果有值，则 base64 格式的配置则失效）
		// uploadImgServer: '/upload',

		// 自定义配置 filename
		uploadFileName: '',

		// 上传图片的自定义参数
		uploadImgParams: {
			// token: 'abcdef12345'
		},

		// 上传图片的自定义header
		uploadImgHeaders: {
			// 'Accept': 'text/x-json'
		},

		// 配置 XHR withCredentials
		withCredentials: false,

		// 自定义上传图片超时时间 ms
		uploadImgTimeout: 5 * 60 * 1000,

		// 上传图片 hook
		uploadImgHooks: {
			// customInsert: function (insertLinkImg, result, editor) {
			//     console.log('customInsert')
			//     // 图片上传并返回结果，自定义插入图片的事件，而不是编辑器自动插入图片
			//     const data = result.data1 || []
			//     data.forEach(link => {
			//         insertLinkImg(link)
			//     })
			// },
			before: function before(xhr, editor, files) {
				// 图片上传之前触发

				// 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
				// return {
				//     prevent: true,
				//     msg: '放弃上传'
				// }
			},
			success: function success(xhr, editor, result) {
				// 图片上传并返回结果，图片插入成功之后触发
			},
			fail: function fail(xhr, editor, result) {
				// 图片上传并返回结果，但图片插入错误时触发
			},
			error: function error(xhr, editor) {
				// 图片上传出错时触发
			},
			timeout: function timeout(xhr, editor) {
				// 图片上传超时时触发
			}
		},

		// 是否上传七牛云，默认为 false
		qiniu: false

	};

	/*
	    工具
	*/

	// 和 UA 相关的属性
	var UA = {
		_ua: navigator.userAgent,

		// 是否 webkit
		isWebkit: function isWebkit() {
			var reg = /webkit/i;
			return reg.test(this._ua);
		},

		// 是否 IE
		isIE: function isIE() {
			return 'ActiveXObject' in window;
		}
	};

	// 遍历对象
	function objForEach(obj, fn) {
		var key = void 0,
			result = void 0;
		for (key in obj) {
			if (obj.hasOwnProperty(key)) {
				result = fn.call(obj, key, obj[key]);
				if (result === false) {
					break;
				}
			}
		}
	}

	// 遍历类数组
	function arrForEach(fakeArr, fn) {
		var i = void 0,
			item = void 0,
			result = void 0;
		var length = fakeArr.length || 0;
		for (i = 0; i < length; i++) {
			item = fakeArr[i];
			result = fn.call(fakeArr, item, i);
			if (result === false) {
				break;
			}
		}
	}

	// 获取随机数
	function getRandom(prefix) {
		return prefix + Math.random().toString().slice(2);
	}

	// 替换 html 特殊字符
	function replaceHtmlSymbol(html) {
		if (html == null) {
			return '';
		}
		return html.replace(/</gm, '&lt;').replace(/>/gm, '&gt;').replace(/"/gm, '&quot;');
	}

	// 返回百分比的格式

	/*
	    bold-menu
	*/
	// 构造函数
	function Bold(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-bold"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Bold.prototype = {
		constructor: Bold,

		// 点击事件
		onClick: function onClick(e) {
			// 点击菜单将触发这里

			var editor = this.editor;
			var isSeleEmpty = editor.selection.isSelectionEmpty();

			if (isSeleEmpty) {
				// 选区是空的，插入并选中一个“空白”
				editor.selection.createEmptyRange();
			}

			// 执行 bold 命令
			editor.cmd.do('bold');

			if (isSeleEmpty) {
				// 需要将选取折叠起来
				editor.selection.collapseRange();
				editor.selection.restoreSelection();
			}
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor.cmd.queryCommandState('bold')) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    替换多语言
	 */

	var replaceLang = function(editor, str) {
		var langArgs = editor.config.langArgs || [];
		var result = str;

		langArgs.forEach(function(item) {
			var reg = item.reg;
			var val = item.val;

			if (reg.test(result)) {
				result = result.replace(reg, function() {
					return val;
				});
			}
		});

		return result;
	};

	/*
	    droplist
	*/
	var _emptyFn = function _emptyFn() {};

	// 构造函数
	function DropList(menu, opt) {
		var _this = this;

		// droplist 所依附的菜单
		var editor = menu.editor;
		this.menu = menu;
		this.opt = opt;
		// 容器
		var $container = $('<div class="w-e-droplist"></div>');

		// 标题
		var $title = opt.$title;
		var titleHtml = void 0;
		if ($title) {
			// 替换多语言
			titleHtml = $title.html();
			titleHtml = replaceLang(editor, titleHtml);
			$title.html(titleHtml);

			$title.addClass('w-e-dp-title');
			$container.append($title);
		}

		var list = opt.list || [];
		var type = opt.type || 'list'; // 'list' 列表形式（如“标题”菜单） / 'inline-block' 块状形式（如“颜色”菜单）
		var onClick = opt.onClick || _emptyFn;

		// 加入 DOM 并绑定事件
		var $list = $('<ul class="' + (type === 'list' ? 'w-e-list' : 'w-e-block') + '"></ul>');
		$container.append($list);
		list.forEach(function(item) {
			var $elem = item.$elem;

			// 替换多语言
			var elemHtml = $elem.html();
			elemHtml = replaceLang(editor, elemHtml);
			$elem.html(elemHtml);

			var value = item.value;
			var $li = $('<li class="w-e-item"></li>');
			if ($elem) {
				$li.append($elem);
				$list.append($li);
				$elem.on('click', function(e) {
					onClick(value);

					// 隐藏
					_this.hideTimeoutId = setTimeout(function() {
						_this.hide();
					}, 0);
				});
			}
		});

		// 绑定隐藏事件
		$container.on('mouseleave', function(e) {
			_this.hideTimeoutId = setTimeout(function() {
				_this.hide();
			}, 0);
		});

		// 记录属性
		this.$container = $container;

		// 基本属性
		this._rendered = false;
		this._show = false;
	}

	// 原型
	DropList.prototype = {
		constructor: DropList,

		// 显示（插入DOM）
		show: function show() {
			if (this.hideTimeoutId) {
				// 清除之前的定时隐藏
				clearTimeout(this.hideTimeoutId);
			}

			var menu = this.menu;
			var $menuELem = menu.$elem;
			var $container = this.$container;
			if (this._show) {
				return;
			}
			if (this._rendered) {
				// 显示
				$container.show();
			} else {
				// 加入 DOM 之前先定位位置
				var menuHeight = $menuELem.getSizeData().height || 0;
				var width = this.opt.width || 100; // 默认为 100
				$container.css('margin-top', menuHeight + 'px').css('width', width + 'px');

				// 加入到 DOM
				$menuELem.append($container);
				this._rendered = true;
			}

			// 修改属性
			this._show = true;
		},

		// 隐藏（移除DOM）
		hide: function hide() {
			if (this.showTimeoutId) {
				// 清除之前的定时显示
				clearTimeout(this.showTimeoutId);
			}

			var $container = this.$container;
			if (!this._show) {
				return;
			}
			// 隐藏并需改属性
			$container.hide();
			this._show = false;
		}
	};

	/*
	    menu - header
	*/
	// 构造函数
	function Head(editor) {
		var _this = this;

		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-header"><i/></div>');
		this.type = 'droplist';

		// 当前是否 active 状态
		this._active = false;

		// 初始化 droplist
		this.droplist = new DropList(this, {
			width: 100,
			$title: $('<p>设置标题</p>'),
			type: 'list', // droplist 以列表形式展示
			list: [{
				$elem: $('<h1>H1</h1>'),
				value: '<h1>'
			}, {
				$elem: $('<h2>H2</h2>'),
				value: '<h2>'
			}, {
				$elem: $('<h3>H3</h3>'),
				value: '<h3>'
			}, {
				$elem: $('<h4>H4</h4>'),
				value: '<h4>'
			}, {
				$elem: $('<h5>H5</h5>'),
				value: '<h5>'
			}, {
				$elem: $('<p>正文</p>'),
				value: '<p>'
			}],
			onClick: function onClick(value) {
				// 注意 this 是指向当前的 Head 对象
				_this._command(value);
			}
		});
	}

	// 原型
	Head.prototype = {
		constructor: Head,

		// 执行命令
		_command: function _command(value) {
			var editor = this.editor;

			var $selectionElem = editor.selection.getSelectionContainerElem();
			if (editor.$textElem.equal($selectionElem)) {
				// 不能选中多行来设置标题，否则会出现问题
				// 例如选中的是 <p>xxx</p><p>yyy</p> 来设置标题，设置之后会成为 <h1>xxx<br>yyy</h1> 不符合预期
				return;
			}

			editor.cmd.do('formatBlock', value);
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			var reg = /^h/i;
			var cmdValue = editor.cmd.queryCommandValue('formatBlock');
			if (reg.test(cmdValue)) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    panel
	*/

	var emptyFn = function emptyFn() {};

	// 记录已经显示 panel 的菜单
	var _isCreatedPanelMenus = [];

	// 构造函数
	function Panel(menu, opt) {
		this.menu = menu;
		this.opt = opt;
	}

	// 原型
	Panel.prototype = {
		constructor: Panel,

		// 显示（插入DOM）
		show: function show() {
			var _this = this;

			var menu = this.menu;
			if (_isCreatedPanelMenus.indexOf(menu) >= 0) {
				// 该菜单已经创建了 panel 不能再创建
				return;
			}

			var editor = menu.editor;
			var $body = $('body');
			var $textContainerElem = editor.$textContainerElem;
			var opt = this.opt;

			// panel 的容器
			var $container = $('<div class="w-e-panel-container"></div>');
			var width = opt.width || 300; // 默认 300px
			$container.css('width', width + 'px').css('margin-left', (0 - width) / 2 + 'px');

			// 添加关闭按钮
			var $closeBtn = $('<i class="w-e-icon-close w-e-panel-close"></i>');
			$container.append($closeBtn);
			$closeBtn.on('click', function() {
				_this.hide();
			});

			// 准备 tabs 容器
			var $tabTitleContainer = $('<ul class="w-e-panel-tab-title"></ul>');
			var $tabContentContainer = $('<div class="w-e-panel-tab-content"></div>');
			$container.append($tabTitleContainer).append($tabContentContainer);

			// 设置高度
			var height = opt.height;
			if (height) {
				$tabContentContainer.css('height', height + 'px').css('overflow-y', 'auto');
			}

			// tabs
			var tabs = opt.tabs || [];
			var tabTitleArr = [];
			var tabContentArr = [];
			tabs.forEach(function(tab, tabIndex) {
				if (!tab) {
					return;
				}
				var title = tab.title || '';
				var tpl = tab.tpl || '';

				// 替换多语言
				title = replaceLang(editor, title);
				tpl = replaceLang(editor, tpl);

				// 添加到 DOM
				var $title = $('<li class="w-e-item">' + title + '</li>');
				$tabTitleContainer.append($title);
				var $content = $(tpl);
				$tabContentContainer.append($content);

				// 记录到内存
				$title._index = tabIndex;
				tabTitleArr.push($title);
				tabContentArr.push($content);

				// 设置 active 项
				if (tabIndex === 0) {
					$title._active = true;
					$title.addClass('w-e-active');
				} else {
					$content.hide();
				}

				// 绑定 tab 的事件
				$title.on('click', function(e) {
					if ($title._active) {
						return;
					}
					// 隐藏所有的 tab
					tabTitleArr.forEach(function($title) {
						$title._active = false;
						$title.removeClass('w-e-active');
					});
					tabContentArr.forEach(function($content) {
						$content.hide();
					});

					// 显示当前的 tab
					$title._active = true;
					$title.addClass('w-e-active');
					$content.show();
				});
			});

			// 绑定关闭事件
			$container.on('click', function(e) {
				// 点击时阻止冒泡
				e.stopPropagation();
			});
			$body.on('click', function(e) {
				_this.hide();
			});

			// 添加到 DOM
			$textContainerElem.append($container);

			// 绑定 opt 的事件，只有添加到 DOM 之后才能绑定成功
			tabs.forEach(function(tab, index) {
				if (!tab) {
					return;
				}
				var events = tab.events || [];
				events.forEach(function(event) {
					var selector = event.selector;
					var type = event.type;
					var fn = event.fn || emptyFn;
					var $content = tabContentArr[index];
					$content.find(selector).on(type, function(e) {
						e.stopPropagation();
						var needToHide = fn(e);
						// 执行完事件之后，是否要关闭 panel
						if (needToHide) {
							_this.hide();
						}
					});
				});
			});

			// focus 第一个 elem
			var $inputs = $container.find('input[type=text],textarea');
			if ($inputs.length) {
				$inputs.get(0).focus();
			}

			// 添加到属性
			this.$container = $container;

			// 隐藏其他 panel
			this._hideOtherPanels();
			// 记录该 menu 已经创建了 panel
			_isCreatedPanelMenus.push(menu);
		},

		// 隐藏（移除DOM）
		hide: function hide() {
			var menu = this.menu;
			var $container = this.$container;
			if ($container) {
				$container.remove();
			}

			// 将该 menu 记录中移除
			_isCreatedPanelMenus = _isCreatedPanelMenus.filter(function(item) {
				if (item === menu) {
					return false;
				} else {
					return true;
				}
			});
		},

		// 一个 panel 展示时，隐藏其他 panel
		_hideOtherPanels: function _hideOtherPanels() {
			if (!_isCreatedPanelMenus.length) {
				return;
			}
			_isCreatedPanelMenus.forEach(function(menu) {
				var panel = menu.panel || {};
				if (panel.hide) {
					panel.hide();
				}
			});
		}
	};

	/*
	    menu - link
	*/
	// 构造函数
	function Link(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-link"><i/></div>');
		this.type = 'panel';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Link.prototype = {
		constructor: Link,

		// 点击事件
		onClick: function onClick(e) {
			var editor = this.editor;
			var $linkelem = void 0;

			if (this._active) {
				// 当前选区在链接里面
				$linkelem = editor.selection.getSelectionContainerElem();
				if (!$linkelem) {
					return;
				}
				// 将该元素都包含在选取之内，以便后面整体替换
				editor.selection.createRangeByElem($linkelem);
				editor.selection.restoreSelection();
				// 显示 panel
				this._createPanel($linkelem.text(), $linkelem.attr('href'));
			} else {
				// 当前选区不在链接里面
				if (editor.selection.isSelectionEmpty()) {
					// 选区是空的，未选中内容
					this._createPanel('', '');
				} else {
					// 选中内容了
					this._createPanel(editor.selection.getSelectionText(), '');
				}
			}
		},

		// 创建 panel
		_createPanel: function _createPanel(text, link) {
			var _this = this;

			// panel 中需要用到的id
			var inputLinkId = getRandom('input-link');
			var inputTextId = getRandom('input-text');
			var btnOkId = getRandom('btn-ok');
			var btnDelId = getRandom('btn-del');

			// 是否显示“删除链接”
			var delBtnDisplay = this._active ? 'inline-block' : 'none';

			// 初始化并显示 panel
			var panel = new Panel(this, {
				width: 300,
				// panel 中可包含多个 tab
				tabs: [{
						// tab 的标题
						title: '链接',
						// 模板
						tpl: '<div>\n                            <input id="' + inputTextId +
							'" type="text" class="block" value="' + text +
							'" placeholder="\u94FE\u63A5\u6587\u5B57"/></td>\n                            <input id="' + inputLinkId +
							'" type="text" class="block" value="' + link +
							'" placeholder="http://..."/></td>\n                            <div class="w-e-button-container">\n                                <button id="' +
							btnOkId + '" class="right">\u63D2\u5165</button>\n                                <button id="' +
							btnDelId + '" class="gray right" style="display:' + delBtnDisplay +
							'">\u5220\u9664\u94FE\u63A5</button>\n                            </div>\n                        </div>',
						// 事件绑定
						events: [
							// 插入链接
							{
								selector: '#' + btnOkId,
								type: 'click',
								fn: function fn() {
									// 执行插入链接
									var $link = $('#' + inputLinkId);
									var $text = $('#' + inputTextId);
									var link = $link.val();
									var text = $text.val();
									_this._insertLink(text, link);

									// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
									return true;
								}
							},
							// 删除链接
							{
								selector: '#' + btnDelId,
								type: 'click',
								fn: function fn() {
									// 执行删除链接
									_this._delLink();

									// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
									return true;
								}
							}
						]
					} // tab end
				] // tabs end
			});

			// 显示 panel
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		// 删除当前链接
		_delLink: function _delLink() {
			if (!this._active) {
				return;
			}
			var editor = this.editor;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			var selectionText = editor.selection.getSelectionText();
			editor.cmd.do('insertHTML', '<span>' + selectionText + '</span>');
		},

		// 插入链接
		_insertLink: function _insertLink(text, link) {
			if (!text || !link) {
				return;
			}
			var editor = this.editor;
			var config = editor.config;
			var linkCheck = config.linkCheck;
			var checkResult = true; // 默认为 true
			if (linkCheck && typeof linkCheck === 'function') {
				checkResult = linkCheck(text, link);
			}
			if (checkResult === true) {
				editor.cmd.do('insertHTML', '<a href="' + link + '" target="_blank">' + text + '</a>');
			} else {
				alert(checkResult);
			}
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			if ($selectionELem.getNodeName() === 'A') {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    italic-menu
	*/
	// 构造函数
	function Italic(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-italic"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Italic.prototype = {
		constructor: Italic,

		// 点击事件
		onClick: function onClick(e) {
			// 点击菜单将触发这里

			var editor = this.editor;
			var isSeleEmpty = editor.selection.isSelectionEmpty();

			if (isSeleEmpty) {
				// 选区是空的，插入并选中一个“空白”
				editor.selection.createEmptyRange();
			}

			// 执行 italic 命令
			editor.cmd.do('italic');

			if (isSeleEmpty) {
				// 需要将选取折叠起来
				editor.selection.collapseRange();
				editor.selection.restoreSelection();
			}
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor.cmd.queryCommandState('italic')) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    redo-menu
	*/
	// 构造函数
	function Redo(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-redo"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Redo.prototype = {
		constructor: Redo,

		// 点击事件
		onClick: function onClick(e) {
			// 点击菜单将触发这里

			var editor = this.editor;

			// 执行 redo 命令
			editor.cmd.do('redo');
		}
	};

	/*
	    strikeThrough-menu
	*/
	// 构造函数
	function StrikeThrough(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-strikethrough"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	StrikeThrough.prototype = {
		constructor: StrikeThrough,

		// 点击事件
		onClick: function onClick(e) {
			// 点击菜单将触发这里

			var editor = this.editor;
			var isSeleEmpty = editor.selection.isSelectionEmpty();

			if (isSeleEmpty) {
				// 选区是空的，插入并选中一个“空白”
				editor.selection.createEmptyRange();
			}

			// 执行 strikeThrough 命令
			editor.cmd.do('strikeThrough');

			if (isSeleEmpty) {
				// 需要将选取折叠起来
				editor.selection.collapseRange();
				editor.selection.restoreSelection();
			}
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor.cmd.queryCommandState('strikeThrough')) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    underline-menu
	*/
	// 构造函数
	function Underline(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-underline"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Underline.prototype = {
		constructor: Underline,

		// 点击事件
		onClick: function onClick(e) {
			// 点击菜单将触发这里

			var editor = this.editor;
			var isSeleEmpty = editor.selection.isSelectionEmpty();

			if (isSeleEmpty) {
				// 选区是空的，插入并选中一个“空白”
				editor.selection.createEmptyRange();
			}

			// 执行 underline 命令
			editor.cmd.do('underline');

			if (isSeleEmpty) {
				// 需要将选取折叠起来
				editor.selection.collapseRange();
				editor.selection.restoreSelection();
			}
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor.cmd.queryCommandState('underline')) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    undo-menu
	*/
	// 构造函数
	function Undo(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-undo"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Undo.prototype = {
		constructor: Undo,

		// 点击事件
		onClick: function onClick(e) {
			// 点击菜单将触发这里

			var editor = this.editor;

			// 执行 undo 命令
			editor.cmd.do('undo');
		}
	};

	/*
	    menu - list
	*/
	// 构造函数
	function List(editor) {
		var _this = this;

		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-list2"><i/></div>');
		this.type = 'droplist';

		// 当前是否 active 状态
		this._active = false;

		// 初始化 droplist
		this.droplist = new DropList(this, {
			width: 120,
			$title: $('<p>设置列表</p>'),
			type: 'list', // droplist 以列表形式展示
			list: [{
				$elem: $('<span><i class="w-e-icon-list-numbered"></i> 有序列表</span>'),
				value: 'insertOrderedList'
			}, {
				$elem: $('<span><i class="w-e-icon-list2"></i> 无序列表</span>'),
				value: 'insertUnorderedList'
			}],
			onClick: function onClick(value) {
				// 注意 this 是指向当前的 List 对象
				_this._command(value);
			}
		});
	}

	// 原型
	List.prototype = {
		constructor: List,

		// 执行命令
		_command: function _command(value) {
			var editor = this.editor;
			var $textElem = editor.$textElem;
			editor.selection.restoreSelection();
			if (editor.cmd.queryCommandState(value)) {
				return;
			}
			editor.cmd.do(value);

			// 验证列表是否被包裹在 <p> 之内
			var $selectionElem = editor.selection.getSelectionContainerElem();
			if ($selectionElem.getNodeName() === 'LI') {
				$selectionElem = $selectionElem.parent();
			}
			if (/^ol|ul$/i.test($selectionElem.getNodeName()) === false) {
				return;
			}
			if ($selectionElem.equal($textElem)) {
				// 证明是顶级标签，没有被 <p> 包裹
				return;
			}
			var $parent = $selectionElem.parent();
			if ($parent.equal($textElem)) {
				// $parent 是顶级标签，不能删除
				return;
			}

			$selectionElem.insertAfter($parent);
			$parent.remove();
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor.cmd.queryCommandState('insertUnOrderedList') || editor.cmd.queryCommandState('insertOrderedList')) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    menu - justify
	*/
	// 构造函数
	function Justify(editor) {
		var _this = this;

		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-paragraph-left"><i/></div>');
		this.type = 'droplist';

		// 当前是否 active 状态
		this._active = false;

		// 初始化 droplist
		this.droplist = new DropList(this, {
			width: 100,
			$title: $('<p>对齐方式</p>'),
			type: 'list', // droplist 以列表形式展示
			list: [{
				$elem: $('<span><i class="w-e-icon-paragraph-left"></i> 靠左</span>'),
				value: 'justifyLeft'
			}, {
				$elem: $('<span><i class="w-e-icon-paragraph-center"></i> 居中</span>'),
				value: 'justifyCenter'
			}, {
				$elem: $('<span><i class="w-e-icon-paragraph-right"></i> 靠右</span>'),
				value: 'justifyRight'
			}],
			onClick: function onClick(value) {
				// 注意 this 是指向当前的 List 对象
				_this._command(value);
			}
		});
	}

	// 原型
	Justify.prototype = {
		constructor: Justify,

		// 执行命令
		_command: function _command(value) {
			var editor = this.editor;
			editor.cmd.do(value);
		}
	};

	/*
	    menu - Forecolor
	*/
	// 构造函数
	function ForeColor(editor) {
		var _this = this;

		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-pencil2"><i/></div>');
		this.type = 'droplist';

		// 获取配置的颜色
		var config = editor.config;
		var colors = config.colors || [];

		// 当前是否 active 状态
		this._active = false;

		// 初始化 droplist
		this.droplist = new DropList(this, {
			width: 120,
			$title: $('<p>文字颜色</p>'),
			type: 'inline-block', // droplist 内容以 block 形式展示
			list: colors.map(function(color) {
				return {
					$elem: $('<i style="color:' + color + ';" class="w-e-icon-pencil2"></i>'),
					value: color
				};
			}),
			onClick: function onClick(value) {
				// 注意 this 是指向当前的 ForeColor 对象
				_this._command(value);
			}
		});
	}

	// 原型
	ForeColor.prototype = {
		constructor: ForeColor,

		// 执行命令
		_command: function _command(value) {
			var editor = this.editor;
			editor.cmd.do('foreColor', value);
		}
	};

	/*
	    menu - BackColor
	*/
	// 构造函数
	function BackColor(editor) {
		var _this = this;

		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-paint-brush"><i/></div>');
		this.type = 'droplist';

		// 获取配置的颜色
		var config = editor.config;
		var colors = config.colors || [];

		// 当前是否 active 状态
		this._active = false;

		// 初始化 droplist
		this.droplist = new DropList(this, {
			width: 120,
			$title: $('<p>背景色</p>'),
			type: 'inline-block', // droplist 内容以 block 形式展示
			list: colors.map(function(color) {
				return {
					$elem: $('<i style="color:' + color + ';" class="w-e-icon-paint-brush"></i>'),
					value: color
				};
			}),
			onClick: function onClick(value) {
				// 注意 this 是指向当前的 BackColor 对象
				_this._command(value);
			}
		});
	}

	// 原型
	BackColor.prototype = {
		constructor: BackColor,

		// 执行命令
		_command: function _command(value) {
			var editor = this.editor;
			editor.cmd.do('backColor', value);
		}
	};

	/*
	    menu - quote
	*/
	// 构造函数
	function Quote(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-quotes-left"><i/>\n        </div>');
		this.type = 'click';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Quote.prototype = {
		constructor: Quote,

		onClick: function onClick(e) {
			var editor = this.editor;
			var $selectionElem = editor.selection.getSelectionContainerElem();
			var nodeName = $selectionElem.getNodeName();

			if (!UA.isIE()) {
				if (nodeName === 'BLOCKQUOTE') {
					// 撤销 quote
					editor.cmd.do('formatBlock', '<P>');
				} else {
					// 转换为 quote
					editor.cmd.do('formatBlock', '<BLOCKQUOTE>');
				}
				return;
			}

			// IE 中不支持 formatBlock <BLOCKQUOTE> ，要用其他方式兼容
			var content = void 0,
				$targetELem = void 0;
			if (nodeName === 'P') {
				// 将 P 转换为 quote
				content = $selectionElem.text();
				$targetELem = $('<blockquote>' + content + '</blockquote>');
				$targetELem.insertAfter($selectionElem);
				$selectionElem.remove();
				return;
			}
			if (nodeName === 'BLOCKQUOTE') {
				// 撤销 quote
				content = $selectionElem.text();
				$targetELem = $('<p>' + content + '</p>');
				$targetELem.insertAfter($selectionElem);
				$selectionElem.remove();
			}
		},

		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			var reg = /^BLOCKQUOTE$/i;
			var cmdValue = editor.cmd.queryCommandValue('formatBlock');
			if (reg.test(cmdValue)) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    menu - code
	*/
	// 构造函数
	function Code(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-terminal"><i/>\n        </div>');
		this.type = 'panel';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Code.prototype = {
		constructor: Code,

		onClick: function onClick(e) {
			var editor = this.editor;
			var $startElem = editor.selection.getSelectionStartElem();
			var $endElem = editor.selection.getSelectionEndElem();
			var isSeleEmpty = editor.selection.isSelectionEmpty();
			var selectionText = editor.selection.getSelectionText();
			var $code = void 0;

			if (!$startElem.equal($endElem)) {
				// 跨元素选择，不做处理
				editor.selection.restoreSelection();
				return;
			}
			if (!isSeleEmpty) {
				// 选取不是空，用 <code> 包裹即可
				$code = $('<code>' + selectionText + '</code>');
				editor.cmd.do('insertElem', $code);
				editor.selection.createRangeByElem($code, false);
				editor.selection.restoreSelection();
				return;
			}

			// 选取是空，且没有夸元素选择，则插入 <pre><code></code></prev>
			if (this._active) {
				// 选中状态，将编辑内容
				this._createPanel($startElem.html());
			} else {
				// 未选中状态，将创建内容
				this._createPanel();
			}
		},

		_createPanel: function _createPanel(value) {
			var _this = this;

			// value - 要编辑的内容
			value = value || '';
			var type = !value ? 'new' : 'edit';
			var textId = getRandom('texxt');
			var btnId = getRandom('btn');

			var panel = new Panel(this, {
				width: 500,
				// 一个 Panel 包含多个 tab
				tabs: [{
						// 标题
						title: '插入代码',
						// 模板
						tpl: '<div>\n                        <textarea id="' + textId + '" style="height:145px;;">' + value +
							'</textarea>\n                        <div class="w-e-button-container">\n                            <button id="' +
							btnId +
							'" class="right">\u63D2\u5165</button>\n                        </div>\n                    <div>',
						// 事件绑定
						events: [
							// 插入代码
							{
								selector: '#' + btnId,
								type: 'click',
								fn: function fn() {
									var $text = $('#' + textId);
									var text = $text.val() || $text.html();
									text = replaceHtmlSymbol(text);
									if (type === 'new') {
										// 新插入
										_this._insertCode(text);
									} else {
										// 编辑更新
										_this._updateCode(text);
									}

									// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
									return true;
								}
							}
						]
					} // first tab end
				] // tabs end
			}); // new Panel end

			// 显示 panel
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		// 插入代码
		_insertCode: function _insertCode(value) {
			var editor = this.editor;
			editor.cmd.do('insertHTML', '<pre><code>' + value + '</code></pre><p><br></p>');
		},

		// 更新代码
		_updateCode: function _updateCode(value) {
			var editor = this.editor;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			$selectionELem.html(value);
			editor.selection.restoreSelection();
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			var $parentElem = $selectionELem.parent();
			if ($selectionELem.getNodeName() === 'CODE' && $parentElem.getNodeName() === 'PRE') {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    menu - emoticon
	*/
	// 构造函数
	function Emoticon(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-happy"><i/>\n        </div>');
		this.type = 'panel';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Emoticon.prototype = {
		constructor: Emoticon,

		onClick: function onClick() {
			this._createPanel();
		},

		_createPanel: function _createPanel() {
			var _this = this;

			var editor = this.editor;
			var config = editor.config;
			// 获取表情配置
			var emotions = config.emotions || [];

			// 创建表情 dropPanel 的配置
			var tabConfig = [];
			emotions.forEach(function(emotData) {
				var emotType = emotData.type;
				var content = emotData.content || [];

				// 这一组表情最终拼接出来的 html
				var faceHtml = '';

				// emoji 表情
				if (emotType === 'emoji') {
					content.forEach(function(item) {
						if (item) {
							faceHtml += '<span class="w-e-item">' + item + '</span>';
						}
					});
				}
				// 图片表情
				if (emotType === 'image') {
					content.forEach(function(item) {
						var src = item.src;
						var alt = item.alt;
						if (src) {
							// 加一个 data-w-e 属性，点击图片的时候不再提示编辑图片
							faceHtml += '<span class="w-e-item"><img src="' + src + '" alt="' + alt + '" data-w-e="1"/></span>';
						}
					});
				}

				tabConfig.push({
					title: emotData.title,
					tpl: '<div class="w-e-emoticon-container">' + faceHtml + '</div>',
					events: [{
						selector: 'span.w-e-item',
						type: 'click',
						fn: function fn(e) {
							var target = e.target;
							var $target = $(target);
							var nodeName = $target.getNodeName();

							var insertHtml = void 0;
							if (nodeName === 'IMG') {
								// 插入图片
								insertHtml = $target.parent().html();
							} else {
								// 插入 emoji
								insertHtml = '<span>' + $target.html() + '</span>';
							}

							_this._insert(insertHtml);
							// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
							return true;
						}
					}]
				});
			});

			var panel = new Panel(this, {
				width: 300,
				height: 200,
				// 一个 Panel 包含多个 tab
				tabs: tabConfig
			});

			// 显示 panel
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		// 插入表情
		_insert: function _insert(emotHtml) {
			var editor = this.editor;
			editor.cmd.do('insertHTML', emotHtml);
		}
	};

	/*
	    menu - table
	*/
	// 构造函数
	function Table(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-table2"><i/></div>');
		this.type = 'panel';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Table.prototype = {
		constructor: Table,

		onClick: function onClick() {
			if (this._active) {
				// 编辑现有表格
				this._createEditPanel();
			} else {
				// 插入新表格
				this._createInsertPanel();
			}
		},

		// 创建插入新表格的 panel
		_createInsertPanel: function _createInsertPanel() {
			var _this = this;

			// 用到的 id
			var btnInsertId = getRandom('btn');
			var textRowNum = getRandom('row');
			var textColNum = getRandom('col');

			var panel = new Panel(this, {
				width: 250,
				// panel 包含多个 tab
				tabs: [{
						// 标题
						title: '插入表格',
						// 模板
						tpl: '<div>\n                        <p style="text-align:left; padding:5px 0;">\n                            \u521B\u5EFA\n                            <input id="' +
							textRowNum +
							'" type="text" value="5" style="width:40px;text-align:center;"/>\n                            \u884C\n                            <input id="' +
							textColNum +
							'" type="text" value="5" style="width:40px;text-align:center;"/>\n                            \u5217\u7684\u8868\u683C\n                        </p>\n                        <div class="w-e-button-container">\n                            <button id="' +
							btnInsertId +
							'" class="right">\u63D2\u5165</button>\n                        </div>\n                    </div>',
						// 事件绑定
						events: [{
							// 点击按钮，插入表格
							selector: '#' + btnInsertId,
							type: 'click',
							fn: function fn() {
								var rowNum = parseInt($('#' + textRowNum).val());
								var colNum = parseInt($('#' + textColNum).val());

								if (rowNum && colNum && rowNum > 0 && colNum > 0) {
									// form 数据有效
									_this._insert(rowNum, colNum);
								}

								// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
								return true;
							}
						}]
					} // first tab end
				] // tabs end
			}); // panel end

			// 展示 panel
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		// 插入表格
		_insert: function _insert(rowNum, colNum) {
			// 拼接 table 模板
			var r = void 0,
				c = void 0;
			var html = '<table border="0" width="100%" cellpadding="0" cellspacing="0">';
			for (r = 0; r < rowNum; r++) {
				html += '<tr>';
				if (r === 0) {
					for (c = 0; c < colNum; c++) {
						html += '<th>&nbsp;</th>';
					}
				} else {
					for (c = 0; c < colNum; c++) {
						html += '<td>&nbsp;</td>';
					}
				}
				html += '</tr>';
			}
			html += '</table><p><br></p>';

			// 执行命令
			var editor = this.editor;
			editor.cmd.do('insertHTML', html);

			// 防止 firefox 下出现 resize 的控制点
			editor.cmd.do('enableObjectResizing', false);
			editor.cmd.do('enableInlineTableEditing', false);
		},

		// 创建编辑表格的 panel
		_createEditPanel: function _createEditPanel() {
			var _this2 = this;

			// 可用的 id
			var addRowBtnId = getRandom('add-row');
			var addColBtnId = getRandom('add-col');
			var delRowBtnId = getRandom('del-row');
			var delColBtnId = getRandom('del-col');
			var delTableBtnId = getRandom('del-table');

			// 创建 panel 对象
			var panel = new Panel(this, {
				width: 320,
				// panel 包含多个 tab
				tabs: [{
					// 标题
					title: '编辑表格',
					// 模板
					tpl: '<div>\n                        <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                            <button id="' +
						addRowBtnId + '" class="left">\u589E\u52A0\u884C</button>\n                            <button id="' +
						delRowBtnId + '" class="red left">\u5220\u9664\u884C</button>\n                            <button id="' +
						addColBtnId + '" class="left">\u589E\u52A0\u5217</button>\n                            <button id="' +
						delColBtnId +
						'" class="red left">\u5220\u9664\u5217</button>\n                        </div>\n                        <div class="w-e-button-container">\n                            <button id="' +
						delTableBtnId +
						'" class="gray left">\u5220\u9664\u8868\u683C</button>\n                        </dv>\n                    </div>',
					// 事件绑定
					events: [{
						// 增加行
						selector: '#' + addRowBtnId,
						type: 'click',
						fn: function fn() {
							_this2._addRow();
							// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
							return true;
						}
					}, {
						// 增加列
						selector: '#' + addColBtnId,
						type: 'click',
						fn: function fn() {
							_this2._addCol();
							// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
							return true;
						}
					}, {
						// 删除行
						selector: '#' + delRowBtnId,
						type: 'click',
						fn: function fn() {
							_this2._delRow();
							// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
							return true;
						}
					}, {
						// 删除列
						selector: '#' + delColBtnId,
						type: 'click',
						fn: function fn() {
							_this2._delCol();
							// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
							return true;
						}
					}, {
						// 删除表格
						selector: '#' + delTableBtnId,
						type: 'click',
						fn: function fn() {
							_this2._delTable();
							// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
							return true;
						}
					}]
				}]
			});
			// 显示 panel
			panel.show();
		},

		// 获取选中的单元格的位置信息
		_getLocationData: function _getLocationData() {
			var result = {};
			var editor = this.editor;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			var nodeName = $selectionELem.getNodeName();
			if (nodeName !== 'TD' && nodeName !== 'TH') {
				return;
			}

			// 获取 td index
			var $tr = $selectionELem.parent();
			var $tds = $tr.children();
			var tdLength = $tds.length;
			$tds.forEach(function(td, index) {
				if (td === $selectionELem[0]) {
					// 记录并跳出循环
					result.td = {
						index: index,
						elem: td,
						length: tdLength
					};
					return false;
				}
			});

			// 获取 tr index
			var $tbody = $tr.parent();
			var $trs = $tbody.children();
			var trLength = $trs.length;
			$trs.forEach(function(tr, index) {
				if (tr === $tr[0]) {
					// 记录并跳出循环
					result.tr = {
						index: index,
						elem: tr,
						length: trLength
					};
					return false;
				}
			});

			// 返回结果
			return result;
		},

		// 增加行
		_addRow: function _addRow() {
			// 获取当前单元格的位置信息
			var locationData = this._getLocationData();
			if (!locationData) {
				return;
			}
			var trData = locationData.tr;
			var $currentTr = $(trData.elem);
			var tdData = locationData.td;
			var tdLength = tdData.length;

			// 拼接即将插入的字符串
			var newTr = document.createElement('tr');
			var tpl = '',
				i = void 0;
			for (i = 0; i < tdLength; i++) {
				tpl += '<td>&nbsp;</td>';
			}
			newTr.innerHTML = tpl;
			// 插入
			$(newTr).insertAfter($currentTr);
		},

		// 增加列
		_addCol: function _addCol() {
			// 获取当前单元格的位置信息
			var locationData = this._getLocationData();
			if (!locationData) {
				return;
			}
			var trData = locationData.tr;
			var tdData = locationData.td;
			var tdIndex = tdData.index;
			var $currentTr = $(trData.elem);
			var $trParent = $currentTr.parent();
			var $trs = $trParent.children();

			// 遍历所有行
			$trs.forEach(function(tr) {
				var $tr = $(tr);
				var $tds = $tr.children();
				var $currentTd = $tds.get(tdIndex);
				var name = $currentTd.getNodeName().toLowerCase();

				// new 一个 td，并插入
				var newTd = document.createElement(name);
				$(newTd).insertAfter($currentTd);
			});
		},

		// 删除行
		_delRow: function _delRow() {
			// 获取当前单元格的位置信息
			var locationData = this._getLocationData();
			if (!locationData) {
				return;
			}
			var trData = locationData.tr;
			var $currentTr = $(trData.elem);
			$currentTr.remove();
		},

		// 删除列
		_delCol: function _delCol() {
			// 获取当前单元格的位置信息
			var locationData = this._getLocationData();
			if (!locationData) {
				return;
			}
			var trData = locationData.tr;
			var tdData = locationData.td;
			var tdIndex = tdData.index;
			var $currentTr = $(trData.elem);
			var $trParent = $currentTr.parent();
			var $trs = $trParent.children();

			// 遍历所有行
			$trs.forEach(function(tr) {
				var $tr = $(tr);
				var $tds = $tr.children();
				var $currentTd = $tds.get(tdIndex);
				// 删除
				$currentTd.remove();
			});
		},

		// 删除表格
		_delTable: function _delTable() {
			var editor = this.editor;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			var $table = $selectionELem.parentUntil('table');
			if (!$table) {
				return;
			}
			$table.remove();
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			var $selectionELem = editor.selection.getSelectionContainerElem();
			if (!$selectionELem) {
				return;
			}
			var nodeName = $selectionELem.getNodeName();
			if (nodeName === 'TD' || nodeName === 'TH') {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    menu - video
	*/
	// 构造函数
	function Video(editor) {
		this.editor = editor;
		this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-play"><i/></div>');
		this.type = 'panel';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Video.prototype = {

		constructor: Video,

		onClick: function onClick() {
			this._createInsertPanel();
		},

		_createInsertPanel: function _createInsertPanel() {
			var editor = this.editor;
			var uploadVideo = editor.uploadVideo;
			var config = editor.config;

			// id
			var upTriggerId = getRandom('up-trigger');
			var upFileId = getRandom('up-file');

			// tabs 的配置
			var tabsConfig = [{
				title: '上传 video',
				tpl: '<div class="w-e-up-img-container">\n                    ' +
					'<div id="' + upTriggerId + '" class="w-e-up-btn">\n                        ' +
					'<i class="w-e-icon-upload2"></i>\n                    </div>\n                    ' +
					'<div style="display:none;">\n                        <input id="' + upFileId +
					'" type="file" multiple="multiple" accept="audio/mp4, video/mp4"/>\n                    ' +
					'</div>\n                            </div>',
				events: [{
					// 触发选择视频
					selector: '#' + upTriggerId,
					type: 'click',
					fn: function fn() {
						var $file = $('#' + upFileId);
						var fileElem = $file[0];
						if (fileElem) {
							fileElem.click();
						} else {
							// 返回 true 可关闭 panel
							return true;
						}
					}
				}, {
					// 选择视频完毕
					selector: '#' + upFileId,
					type: 'change',
					fn: function fn() {
						var $file = $('#' + upFileId);
						var fileElem = $file[0];
						if (!fileElem) {
							// 返回 true 可关闭 panel
							return true;
						}

						// 获取选中的 file 对象列表
						var fileList = fileElem.files;
						if (fileList.length) {
							uploadVideo.uploadVideo(fileList);
						}

						// 返回 true 可关闭 panel
						return true;
					}
				}]
			}]; // tabs end

			// 判断 tabs 的显示
			var tabsConfigResult = [];
			tabsConfigResult.push(tabsConfig[0]);

			// 创建 panel 并显示
			var panel = new Panel(this, {
				width: 300,
				tabs: tabsConfigResult
			});
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor._selectedImg) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}

		// constructor: Video,
		//
		// onClick: function onClick() {
		//     this._createPanel();
		// },
		//
		// _createPanel: function _createPanel() {
		//     var _this = this;
		//
		//     // 创建 id
		//     var textValId = getRandom('text-val');
		//     var btnId = getRandom('btn');
		//
		//     // 创建 panel
		//     var panel = new Panel(this, {
		//         width: 350,
		//         // 一个 panel 多个 tab
		//         tabs: [{
		//             // 标题
		//             title: '插入视频',
		//             // 模板
		//             tpl: '<div>\n                        <input id="' + textValId + '" type="text" class="block" placeholder="\u683C\u5F0F\u5982\uFF1A<iframe src=... ></iframe>"/>\n                        <div class="w-e-button-container">\n                            <button id="' + btnId + '" class="right">\u63D2\u5165</button>\n                        </div>\n                    </div>',
		//             // 事件绑定
		//             events: [{
		//                 selector: '#' + btnId,
		//                 type: 'click',
		//                 fn: function fn() {
		//                     var $text = $('#' + textValId);
		//                     var val = $text.val().trim();
		//
		//                     // 测试用视频地址
		//                     // <iframe height=498 width=510 src='http://player.youku.com/embed/XMjcwMzc3MzM3Mg==' frameborder=0 'allowfullscreen'></iframe>
		//
		//                     if (val) {
		//                         // 插入视频
		//                         _this._insert(val);
		//                     }
		//
		//                     // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
		//                     return true;
		//                 }
		//             }]
		//         } // first tab end
		//         ] // tabs end
		//     }); // panel end
		//
		//     // 显示 panel
		//     panel.show();
		//
		//     // 记录属性
		//     this.panel = panel;
		// },
		//
		// // 插入视频
		// _insert: function _insert(val) {
		//     var editor = this.editor;
		//     editor.cmd.do('insertHTML', val + '<p><br></p>');
		// }
	};

	/*
	    menu - img
	*/
	// 构造函数
	function Image(editor) {
		this.editor = editor;
		var imgMenuId = getRandom('w-e-img');
		this.$elem = $('<div class="w-e-menu" id="' + imgMenuId + '"><i class="w-e-icon-image"><i/></div>');
		editor.imgMenuId = imgMenuId;
		this.type = 'panel';

		// 当前是否 active 状态
		this._active = false;
	}

	// 原型
	Image.prototype = {
		constructor: Image,

		onClick: function onClick() {
			var editor = this.editor;
			var config = editor.config;
			if (config.qiniu) {
				return;
			}
			if (this._active) {
				this._createEditPanel();
			} else {
				this._createInsertPanel();
			}
		},

		_createEditPanel: function _createEditPanel() {
			var editor = this.editor;

			// id
			var width30 = getRandom('width-30');
			var width50 = getRandom('width-50');
			var width100 = getRandom('width-100');
			var delBtn = getRandom('del-btn');
// <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                        <span style="float:left;font-size:14px;margin:4px 5px 0 5px;color:#333;">\u6700\u5927\u5BBD\u5EA6\uFF1A</span>\n                        <button id="' +
// 					width30 + '" class="left">30%</button>\n                        <button id="' + width50 +
// 					'" class="left">50%</button>\n                        <button id="' + width100 +
// 					'" class="left">100%</button>\n                    </div>
// 第二个反斜杠N前
			// tab 配置
			var tabsConfig = [{
				title: '编辑图片',
				tpl: '<div>\n                    \n               <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                        <span style="float:left;font-size:14px;margin:4px 5px 0 5px;color:#333;">自定义宽度：</span>\n                        <input type="number" id="zdy" class="left" style="width:100px;margin-right:10px;"/>\n                      \n                    </div>\n   <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                        <span style="float:left;font-size:14px;margin:4px 5px 0 5px;color:#333;">自定义高度：</span>\n                        <input type="number" id="zdyh" class="left" style="width:100px;margin-right:10px;"/><button id="zdyhsure">提交</button>\n                      \n                    </div>                 <div class="w-e-button-container">\n                        <button id="' +
						delBtn +
						'" class="gray left">\u5220\u9664\u56FE\u7247</button>\n                    </div>\n                </div>',
				events: [{
					selector: '#' + width30,
					type: 'click',
					fn: function fn() {
						var $img = editor._selectedImg;
						if ($img) {
							$img.css('width', 'auto');
							$img.css('max-width', '30%');
						}
						// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
						return true;
					}
				}, {
					selector: '#' + width50,
					type: 'click',
					fn: function fn() {
						var $img = editor._selectedImg;
						if ($img) {
							$img.css('width', 'auto');
							$img.css('max-width', '50%');
						}
						// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
						return true;
					}
				}, {
					selector: '#' + width100,
					type: 'click',
					fn: function fn() {
						var $img = editor._selectedImg;
						if ($img) {
							$img.css('width', 'auto');
							$img.css('max-width', '100%');
						}
						// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
						return true;
					}
				}, {
					selector: '#' + delBtn,
					type: 'click',
					fn: function fn() {
						var $img = editor._selectedImg;
						if ($img) {
							$img.remove();
						}
						// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
						return true;
					}
				},{
					selector: '#zdysure',
					type: 'click',
					fn: function fn() {
						var $img = editor._selectedImg;
						var value = $('#zdy').val()
						if ($img) {
							$img.css('width', value+'px');
						}
						// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
						return true;
					}
				},{
					selector: '#zdyhsure',
					type: 'click',
					fn: function fn() {
						var $img = editor._selectedImg;
						var value = $('#zdy').val()
						var valueh = $('#zdyh').val()
						if ($img) {
							$img.css('width', value+'px');
							$img.css('height', valueh+'px');
						}
						// 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
						return true;
					}
				}]
			}];

			// 创建 panel 并显示
			var panel = new Panel(this, {
				width: 300,
				tabs: tabsConfig
			});
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		_createInsertPanel: function _createInsertPanel() {
			var editor = this.editor;
			var uploadImg = editor.uploadImg;
			var config = editor.config;

			// id
			var upTriggerId = getRandom('up-trigger');
			var upFileId = getRandom('up-file');
			var linkUrlId = getRandom('link-url');
			var linkBtnId = getRandom('link-btn');

			// tabs 的配置
			var tabsConfig = [{
					title: '上传图片',
					tpl: '<div class="w-e-up-img-container">\n                    <div id="' + upTriggerId +
						'" class="w-e-up-btn">\n                        <i class="w-e-icon-upload2"></i>\n                    </div>\n                    <div style="display:none;">\n                        <input id="' +
						upFileId +
						'" type="file" multiple="multiple" accept="image/jpg,image/jpeg,image/png,image/gif,image/bmp"/>\n                    </div>\n                </div>',
					events: [{
						// 触发选择图片
						selector: '#' + upTriggerId,
						type: 'click',
						fn: function fn() {
							var $file = $('#' + upFileId);
							var fileElem = $file[0];
							if (fileElem) {
								fileElem.click();
							} else {
								// 返回 true 可关闭 panel
								return true;
							}
						}
					}, {
						// 选择图片完毕
						selector: '#' + upFileId,
						type: 'change',
						fn: function fn() {
							var $file = $('#' + upFileId);
							var fileElem = $file[0];
							if (!fileElem) {
								// 返回 true 可关闭 panel
								return true;
							}

							// 获取选中的 file 对象列表
							var fileList = fileElem.files;
							if (fileList.length) {
								uploadImg.uploadImg(fileList);
							}

							// 返回 true 可关闭 panel
							return true;
						}
					}]
				}, // first tab end
				{
					title: '网络图片',
					tpl: '<div>\n                    <input id="' + linkUrlId +
						'" type="text" class="block" placeholder="\u56FE\u7247\u94FE\u63A5"/></td>\n                    <div class="w-e-button-container">\n                        <button id="' +
						linkBtnId + '" class="right">\u63D2\u5165</button>\n                    </div>\n                </div>',
					events: [{
						selector: '#' + linkBtnId,
						type: 'click',
						fn: function fn() {
							var $linkUrl = $('#' + linkUrlId);
							var url = $linkUrl.val().trim();

							if (url) {
								uploadImg.insertLinkImg(url);
							}

							// 返回 true 表示函数执行结束之后关闭 panel
							return true;
						}
					}]
				} // second tab end
			]; // tabs end

			// 判断 tabs 的显示
			var tabsConfigResult = [];
			if ((config.uploadImgShowBase64 || config.uploadImgServer || config.customUploadImg) && window.FileReader) {
				// 显示“上传图片”
				tabsConfigResult.push(tabsConfig[0]);
			}
			if (config.showLinkImg) {
				// 显示“网络图片”
				tabsConfigResult.push(tabsConfig[1]);
			}

			// 创建 panel 并显示
			var panel = new Panel(this, {
				width: 300,
				tabs: tabsConfigResult
			});
			panel.show();

			// 记录属性
			this.panel = panel;
		},

		// 试图改变 active 状态
		tryChangeActive: function tryChangeActive(e) {
			var editor = this.editor;
			var $elem = this.$elem;
			if (editor._selectedImg) {
				this._active = true;
				$elem.addClass('w-e-active');
			} else {
				this._active = false;
				$elem.removeClass('w-e-active');
			}
		}
	};

	/*
	    所有菜单的汇总
	*/

	// 存储菜单的构造函数
	var MenuConstructors = {};

	MenuConstructors.bold = Bold;

	MenuConstructors.head = Head;

	MenuConstructors.link = Link;

	MenuConstructors.italic = Italic;

	MenuConstructors.redo = Redo;

	MenuConstructors.strikeThrough = StrikeThrough;

	MenuConstructors.underline = Underline;

	MenuConstructors.undo = Undo;

	MenuConstructors.list = List;

	MenuConstructors.justify = Justify;

	MenuConstructors.foreColor = ForeColor;

	MenuConstructors.backColor = BackColor;

	MenuConstructors.quote = Quote;

	MenuConstructors.code = Code;

	MenuConstructors.emoticon = Emoticon;

	MenuConstructors.table = Table;

	MenuConstructors.video = Video;

	MenuConstructors.image = Image;

	/*
	    菜单集合
	*/
	// 构造函数
	function Menus(editor) {
		this.editor = editor;
		this.menus = {};
	}

	// 修改原型
	Menus.prototype = {
		constructor: Menus,

		// 初始化菜单
		init: function init() {
			var _this = this;

			var editor = this.editor;
			var config = editor.config || {};
			var configMenus = config.menus || []; // 获取配置中的菜单

			// 根据配置信息，创建菜单
			configMenus.forEach(function(menuKey) {
				var MenuConstructor = MenuConstructors[menuKey];
				if (MenuConstructor && typeof MenuConstructor === 'function') {
					// 创建单个菜单
					_this.menus[menuKey] = new MenuConstructor(editor);
				}
			});

			// 添加到菜单栏
			this._addToToolbar();

			// 绑定事件
			this._bindEvent();
		},

		// 添加到菜单栏
		_addToToolbar: function _addToToolbar() {
			var editor = this.editor;
			var $toolbarElem = editor.$toolbarElem;
			var menus = this.menus;
			var config = editor.config;
			// config.zIndex 是配置的编辑区域的 z-index，菜单的 z-index 得在其基础上 +1
			var zIndex = config.zIndex + 1;
			objForEach(menus, function(key, menu) {
				var $elem = menu.$elem;
				if ($elem) {
					// 设置 z-index
					$elem.css('z-index', zIndex);
					$toolbarElem.append($elem);
				}
			});
		},

		// 绑定菜单 click mouseenter 事件
		_bindEvent: function _bindEvent() {
			var menus = this.menus;
			var editor = this.editor;
			objForEach(menus, function(key, menu) {
				var type = menu.type;
				if (!type) {
					return;
				}
				var $elem = menu.$elem;
				var droplist = menu.droplist;
				var panel = menu.panel;

				// 点击类型，例如 bold
				if (type === 'click' && menu.onClick) {
					$elem.on('click', function(e) {
						if (editor.selection.getRange() == null) {
							return;
						}
						menu.onClick(e);
					});
				}

				// 下拉框，例如 head
				if (type === 'droplist' && droplist) {
					$elem.on('mouseenter', function(e) {
						if (editor.selection.getRange() == null) {
							return;
						}
						// 显示
						droplist.showTimeoutId = setTimeout(function() {
							droplist.show();
						}, 200);
					}).on('mouseleave', function(e) {
						// 隐藏
						droplist.hideTimeoutId = setTimeout(function() {
							droplist.hide();
						}, 0);
					});
				}

				// 弹框类型，例如 link
				if (type === 'panel' && menu.onClick) {
					$elem.on('click', function(e) {
						e.stopPropagation();
						if (editor.selection.getRange() == null) {
							return;
						}
						// 在自定义事件中显示 panel
						menu.onClick(e);
					});
				}
			});
		},

		// 尝试修改菜单状态
		changeActive: function changeActive() {
			var menus = this.menus;
			objForEach(menus, function(key, menu) {
				if (menu.tryChangeActive) {
					setTimeout(function() {
						menu.tryChangeActive();
					}, 100);
				}
			});
		}
	};

	/*
	    粘贴信息的处理
	*/

	// 获取粘贴的纯文本
	function getPasteText(e) {
		var clipboardData = e.clipboardData || e.originalEvent && e.originalEvent.clipboardData;
		var pasteText = void 0;
		if (clipboardData == null) {
			pasteText = window.clipboardData && window.clipboardData.getData('text');
		} else {
			pasteText = clipboardData.getData('text/plain');
		}

		return replaceHtmlSymbol(pasteText);
	}

	// 获取粘贴的html
	function getPasteHtml(e, filterStyle) {
		var clipboardData = e.clipboardData || e.originalEvent && e.originalEvent.clipboardData;
		var pasteText = void 0,
			pasteHtml = void 0;
		if (clipboardData == null) {
			pasteText = window.clipboardData && window.clipboardData.getData('text');
		} else {
			pasteText = clipboardData.getData('text/plain');
			pasteHtml = clipboardData.getData('text/html');
		}
		if (!pasteHtml && pasteText) {
			pasteHtml = '<p>' + replaceHtmlSymbol(pasteText) + '</p>';
		}
		if (!pasteHtml) {
			return;
		}

		// 过滤word中状态过来的无用字符
		var docSplitHtml = pasteHtml.split('</html>');
		if (docSplitHtml.length === 2) {
			pasteHtml = docSplitHtml[0];
		}

		// 过滤无用标签
		pasteHtml = pasteHtml.replace(/<(meta|script|link).+?>/igm, '');
		// 去掉注释
		pasteHtml = pasteHtml.replace(/<!--.*?-->/mg, '');

		if (filterStyle) {
			// 过滤样式
			pasteHtml = pasteHtml.replace(/\s?(class|style)=('|").+?('|")/igm, '');
		} else {
			// 保留样式
			pasteHtml = pasteHtml.replace(/\s?class=('|").+?('|")/igm, '');
		}

		return pasteHtml;
	}

	// 获取粘贴的图片文件
	function getPasteImgs(e) {
		var result = [];
		var txt = getPasteText(e);
		if (txt) {
			// 有文字，就忽略图片
			return result;
		}

		var clipboardData = e.clipboardData || e.originalEvent && e.originalEvent.clipboardData || {};
		var items = clipboardData.items;
		if (!items) {
			return result;
		}

		objForEach(items, function(key, value) {
			var type = value.type;
			if (/image/i.test(type)) {
				result.push(value.getAsFile());
			}
		});

		return result;
	}

	/*
	    编辑区域
	*/

	// 获取一个 elem.childNodes 的 JSON 数据
	function getChildrenJSON($elem) {
		var result = [];
		var $children = $elem.childNodes() || []; // 注意 childNodes() 可以获取文本节点
		$children.forEach(function(curElem) {
			var elemResult = void 0;
			var nodeType = curElem.nodeType;

			// 文本节点
			if (nodeType === 3) {
				elemResult = curElem.textContent;
			}

			// 普通 DOM 节点
			if (nodeType === 1) {
				elemResult = {};

				// tag
				elemResult.tag = curElem.nodeName.toLowerCase();
				// attr
				var attrData = [];
				var attrList = curElem.attributes || {};
				var attrListLength = attrList.length || 0;
				for (var i = 0; i < attrListLength; i++) {
					var attr = attrList[i];
					attrData.push({
						name: attr.name,
						value: attr.value
					});
				}
				elemResult.attrs = attrData;
				// children（递归）
				elemResult.children = getChildrenJSON($(curElem));
			}

			result.push(elemResult);
		});
		return result;
	}

	// 构造函数
	function Text(editor) {
		this.editor = editor;
	}

	// 修改原型
	Text.prototype = {
		constructor: Text,

		// 初始化
		init: function init() {
			// 绑定事件
			this._bindEvent();
		},

		// 清空内容
		clear: function clear() {
			this.html('<p><br></p>');
		},

		// 获取 设置 html
		html: function html(val) {
			var editor = this.editor;
			var $textElem = editor.$textElem;
			if (val == null) {
				return $textElem.html();
			} else {
				$textElem.html(val);

				// 初始化选取，将光标定位到内容尾部
				editor.initSelection();
			}
		},

		// 获取 JSON
		getJSON: function getJSON() {
			var editor = this.editor;
			var $textElem = editor.$textElem;
			return getChildrenJSON($textElem);
		},

		// 获取 设置 text
		text: function text(val) {
			var editor = this.editor;
			var $textElem = editor.$textElem;
			if (val == null) {
				return $textElem.text();
			} else {
				$textElem.text('<p>' + val + '</p>');

				// 初始化选取，将光标定位到内容尾部
				editor.initSelection();
			}
		},

		// 追加内容
		append: function append(html) {
			var editor = this.editor;
			var $textElem = editor.$textElem;
			$textElem.append($(html));

			// 初始化选取，将光标定位到内容尾部
			editor.initSelection();
		},

		// 绑定事件
		_bindEvent: function _bindEvent() {
			// 实时保存选取
			this._saveRangeRealTime();

			// 按回车建时的特殊处理
			this._enterKeyHandle();

			// 清空时保留 <p><br></p>
			this._clearHandle();

			// 粘贴事件（粘贴文字，粘贴图片）
			this._pasteHandle();

			// tab 特殊处理
			this._tabHandle();

			// img 点击
			this._imgHandle();

			// 拖拽事件
			this._dragHandle();
		},

		// 实时保存选取
		_saveRangeRealTime: function _saveRangeRealTime() {
			var editor = this.editor;
			var $textElem = editor.$textElem;

			// 保存当前的选区
			function saveRange(e) {
				// 随时保存选区
				editor.selection.saveRange();
				// 更新按钮 ative 状态
				editor.menus.changeActive();
			}
			// 按键后保存
			$textElem.on('keyup', saveRange);
			$textElem.on('mousedown', function(e) {
				// mousedown 状态下，鼠标滑动到编辑区域外面，也需要保存选区
				$textElem.on('mouseleave', saveRange);
			});
			$textElem.on('mouseup', function(e) {
				saveRange();
				// 在编辑器区域之内完成点击，取消鼠标滑动到编辑区外面的事件
				$textElem.off('mouseleave', saveRange);
			});
		},

		// 按回车键时的特殊处理
		_enterKeyHandle: function _enterKeyHandle() {
			var editor = this.editor;
			var $textElem = editor.$textElem;

			function insertEmptyP($selectionElem) {
				var $p = $('<p><br></p>');
				$p.insertBefore($selectionElem);
				editor.selection.createRangeByElem($p, true);
				editor.selection.restoreSelection();
				$selectionElem.remove();
			}

			// 将回车之后生成的非 <p> 的顶级标签，改为 <p>
			function pHandle(e) {
				var $selectionElem = editor.selection.getSelectionContainerElem();
				var $parentElem = $selectionElem.parent();

				if ($parentElem.html() === '<code><br></code>') {
					// 回车之前光标所在一个 <p><code>.....</code></p> ，忽然回车生成一个空的 <p><code><br></code></p>
					// 而且继续回车跳不出去，因此只能特殊处理
					insertEmptyP($selectionElem);
					return;
				}

				if (!$parentElem.equal($textElem)) {
					// 不是顶级标签
					return;
				}

				var nodeName = $selectionElem.getNodeName();
				if (nodeName === 'P') {
					// 当前的标签是 P ，不用做处理
					return;
				}

				if ($selectionElem.text()) {
					// 有内容，不做处理
					return;
				}

				// 插入 <p> ，并将选取定位到 <p>，删除当前标签
				insertEmptyP($selectionElem);
			}

			$textElem.on('keyup', function(e) {
				if (e.keyCode !== 13) {
					// 不是回车键
					return;
				}
				// 将回车之后生成的非 <p> 的顶级标签，改为 <p>
				pHandle(e);
			});

			// <pre><code></code></pre> 回车时 特殊处理
			function codeHandle(e) {
				var $selectionElem = editor.selection.getSelectionContainerElem();
				if (!$selectionElem) {
					return;
				}
				var $parentElem = $selectionElem.parent();
				var selectionNodeName = $selectionElem.getNodeName();
				var parentNodeName = $parentElem.getNodeName();

				if (selectionNodeName !== 'CODE' || parentNodeName !== 'PRE') {
					// 不符合要求 忽略
					return;
				}

				if (!editor.cmd.queryCommandSupported('insertHTML')) {
					// 必须原生支持 insertHTML 命令
					return;
				}

				// 处理：光标定位到代码末尾，联系点击两次回车，即跳出代码块
				if (editor._willBreakCode === true) {
					// 此时可以跳出代码块
					// 插入 <p> ，并将选取定位到 <p>
					var $p = $('<p><br></p>');
					$p.insertAfter($parentElem);
					editor.selection.createRangeByElem($p, true);
					editor.selection.restoreSelection();

					// 修改状态
					editor._willBreakCode = false;

					e.preventDefault();
					return;
				}

				var _startOffset = editor.selection.getRange().startOffset;

				// 处理：回车时，不能插入 <br> 而是插入 \n ，因为是在 pre 标签里面
				editor.cmd.do('insertHTML', '\n');
				editor.selection.saveRange();
				if (editor.selection.getRange().startOffset === _startOffset) {
					// 没起作用，再来一遍
					editor.cmd.do('insertHTML', '\n');
				}

				var codeLength = $selectionElem.html().length;
				if (editor.selection.getRange().startOffset + 1 === codeLength) {
					// 说明光标在代码最后的位置，执行了回车操作
					// 记录下来，以便下次回车时候跳出 code
					editor._willBreakCode = true;
				}

				// 阻止默认行为
				e.preventDefault();
			}

			$textElem.on('keydown', function(e) {
				if (e.keyCode !== 13) {
					// 不是回车键
					// 取消即将跳转代码块的记录
					editor._willBreakCode = false;
					return;
				}
				// <pre><code></code></pre> 回车时 特殊处理
				codeHandle(e);
			});
		},

		// 清空时保留 <p><br></p>
		_clearHandle: function _clearHandle() {
			var editor = this.editor;
			var $textElem = editor.$textElem;

			$textElem.on('keydown', function(e) {
				if (e.keyCode !== 8) {
					return;
				}
				var txtHtml = $textElem.html().toLowerCase().trim();
				if (txtHtml === '<p><br></p>') {
					// 最后剩下一个空行，就不再删除了
					e.preventDefault();
					return;
				}
			});

			$textElem.on('keyup', function(e) {
				if (e.keyCode !== 8) {
					return;
				}
				var $p = void 0;
				var txtHtml = $textElem.html().toLowerCase().trim();

				// firefox 时用 txtHtml === '<br>' 判断，其他用 !txtHtml 判断
				if (!txtHtml || txtHtml === '<br>') {
					// 内容空了
					$p = $('<p><br/></p>');
					$textElem.html(''); // 一定要先清空，否则在 firefox 下有问题
					$textElem.append($p);
					editor.selection.createRangeByElem($p, false, true);
					editor.selection.restoreSelection();
				}
			});
		},

		// 粘贴事件（粘贴文字 粘贴图片）
		_pasteHandle: function _pasteHandle() {
			var editor = this.editor;
			var config = editor.config;
			var pasteFilterStyle = config.pasteFilterStyle;
			var pasteTextHandle = config.pasteTextHandle;
			var $textElem = editor.$textElem;

			// 粘贴图片、文本的事件，每次只能执行一个
			// 判断该次粘贴事件是否可以执行
			var pasteTime = 0;

			function canDo() {
				var now = Date.now();
				var flag = false;
				if (now - pasteTime >= 500) {
					// 间隔大于 500 ms ，可以执行
					flag = true;
				}
				pasteTime = now;
				return flag;
			}

			// 粘贴文字
			$textElem.on('paste', function(e) {
				if (UA.isIE()) {
					return;
				} else {
					// 阻止默认行为，使用 execCommand 的粘贴命令
					e.preventDefault();
				}

				// 粘贴图片和文本，只能同时使用一个
				if (!canDo()) {
					return;
				}

				// 获取粘贴的文字
				var pasteHtml = getPasteHtml(e, pasteFilterStyle);
				var pasteText = getPasteText(e);
				pasteText = pasteText.replace(/\n/gm, '<br>');

				// 自定义处理粘贴的内容
				if (pasteTextHandle && typeof pasteTextHandle === 'function') {
					pasteHtml = '' + (pasteTextHandle(pasteHtml) || '');
					pasteText = '' + (pasteTextHandle(pasteText) || '');
				}

				var $selectionElem = editor.selection.getSelectionContainerElem();
				if (!$selectionElem) {
					return;
				}
				var nodeName = $selectionElem.getNodeName();

				// code 中只能粘贴纯文本
				if (nodeName === 'CODE' || nodeName === 'PRE') {
					editor.cmd.do('insertHTML', '<p>' + pasteText + '</p>');
					return;
				}

				// 先放开注释，有问题再追查 ————
				// // 表格中忽略，可能会出现异常问题
				// if (nodeName === 'TD' || nodeName === 'TH') {
				//     return
				// }

				if (!pasteHtml) {
					return;
				}
				try {
					// firefox 中，获取的 pasteHtml 可能是没有 <ul> 包裹的 <li>
					// 因此执行 insertHTML 会报错
					editor.cmd.do('insertHTML', pasteHtml);
				} catch (ex) {
					// 此时使用 pasteText 来兼容一下
					editor.cmd.do('insertHTML', '<p>' + pasteText + '</p>');
				}
			});

			// 粘贴图片
			$textElem.on('paste', function(e) {
				if (UA.isIE()) {
					return;
				} else {
					e.preventDefault();
				}

				// 粘贴图片和文本，只能同时使用一个
				if (!canDo()) {
					return;
				}

				// 获取粘贴的图片
				var pasteFiles = getPasteImgs(e);
				if (!pasteFiles || !pasteFiles.length) {
					return;
				}

				// 获取当前的元素
				var $selectionElem = editor.selection.getSelectionContainerElem();
				if (!$selectionElem) {
					return;
				}
				var nodeName = $selectionElem.getNodeName();

				// code 中粘贴忽略
				if (nodeName === 'CODE' || nodeName === 'PRE') {
					return;
				}

				// 上传图片
				var uploadImg = editor.uploadImg;
				uploadImg.uploadImg(pasteFiles);
			});
		},

		// tab 特殊处理
		_tabHandle: function _tabHandle() {
			var editor = this.editor;
			var $textElem = editor.$textElem;

			$textElem.on('keydown', function(e) {
				if (e.keyCode !== 9) {
					return;
				}
				if (!editor.cmd.queryCommandSupported('insertHTML')) {
					// 必须原生支持 insertHTML 命令
					return;
				}
				var $selectionElem = editor.selection.getSelectionContainerElem();
				if (!$selectionElem) {
					return;
				}
				var $parentElem = $selectionElem.parent();
				var selectionNodeName = $selectionElem.getNodeName();
				var parentNodeName = $parentElem.getNodeName();

				if (selectionNodeName === 'CODE' && parentNodeName === 'PRE') {
					// <pre><code> 里面
					editor.cmd.do('insertHTML', '    ');
				} else {
					// 普通文字
					editor.cmd.do('insertHTML', '&nbsp;&nbsp;&nbsp;&nbsp;');
				}

				e.preventDefault();
			});
		},

		// img 点击
		_imgHandle: function _imgHandle() {
			var editor = this.editor;
			var $textElem = editor.$textElem;

			// 为图片增加 selected 样式
			$textElem.on('click', 'img', function(e) {
				var img = this;
				var $img = $(img);

				if ($img.attr('data-w-e') === '1') {
					// 是表情图片，忽略
					return;
				}

				// 记录当前点击过的图片
				editor._selectedImg = $img;

				// 修改选区并 restore ，防止用户此时点击退格键，会删除其他内容
				editor.selection.createRangeByElem($img);
				editor.selection.restoreSelection();
			});

			// 去掉图片的 selected 样式
			$textElem.on('click  keyup', function(e) {
				if (e.target.matches('img')) {
					// 点击的是图片，忽略
					return;
				}
				// 删除记录
				editor._selectedImg = null;
			});
		},

		// 拖拽事件
		_dragHandle: function _dragHandle() {
			var editor = this.editor;

			// 禁用 document 拖拽事件
			var $document = $(document);
			$document.on('dragleave drop dragenter dragover', function(e) {
				e.preventDefault();
			});

			// 添加编辑区域拖拽事件
			var $textElem = editor.$textElem;
			$textElem.on('drop', function(e) {
				e.preventDefault();
				var files = e.dataTransfer && e.dataTransfer.files;
				if (!files || !files.length) {
					return;
				}

				// 上传图片
				var uploadImg = editor.uploadImg;
				uploadImg.uploadImg(files);
			});
		}
	};

	/*
	    命令，封装 document.execCommand
	*/

	// 构造函数
	function Command(editor) {
		this.editor = editor;
	}

	// 修改原型
	Command.prototype = {
		constructor: Command,

		// 执行命令
		do: function _do(name, value) {
			var editor = this.editor;

			// 如果无选区，忽略
			if (!editor.selection.getRange()) {
				return;
			}

			// 恢复选取
			editor.selection.restoreSelection();

			// 执行
			var _name = '_' + name;
			if (this[_name]) {
				// 有自定义事件
				this[_name](value);
			} else {
				// 默认 command
				this._execCommand(name, value);
			}

			// 修改菜单状态
			editor.menus.changeActive();

			// 最后，恢复选取保证光标在原来的位置闪烁
			editor.selection.saveRange();
			editor.selection.restoreSelection();

			// 触发 onchange
			editor.change && editor.change();
		},

		// 自定义 insertHTML 事件
		_insertHTML: function _insertHTML(html) {
			var editor = this.editor;
			var range = editor.selection.getRange();

			if (this.queryCommandSupported('insertHTML')) {
				// W3C
				this._execCommand('insertHTML', html);
			} else if (range.insertNode) {
				// IE
				range.deleteContents();
				range.insertNode($(html)[0]);
			} else if (range.pasteHTML) {
				// IE <= 10
				range.pasteHTML(html);
			}
		},

		// 插入 elem
		_insertElem: function _insertElem($elem) {
			var editor = this.editor;
			var range = editor.selection.getRange();

			if (range.insertNode) {
				range.deleteContents();
				range.insertNode($elem[0]);
			}
		},

		// 封装 execCommand
		_execCommand: function _execCommand(name, value) {
			document.execCommand(name, false, value);
		},

		// 封装 document.queryCommandValue
		queryCommandValue: function queryCommandValue(name) {
			return document.queryCommandValue(name);
		},

		// 封装 document.queryCommandState
		queryCommandState: function queryCommandState(name) {
			return document.queryCommandState(name);
		},

		// 封装 document.queryCommandSupported
		queryCommandSupported: function queryCommandSupported(name) {
			return document.queryCommandSupported(name);
		}
	};

	/*
	    selection range API
	*/

	// 构造函数
	function API(editor) {
		this.editor = editor;
		this._currentRange = null;
	}

	// 修改原型
	API.prototype = {
		constructor: API,

		// 获取 range 对象
		getRange: function getRange() {
			return this._currentRange;
		},

		// 保存选区
		saveRange: function saveRange(_range) {
			if (_range) {
				// 保存已有选区
				this._currentRange = _range;
				return;
			}

			// 获取当前的选区
			var selection = window.getSelection();
			if (selection.rangeCount === 0) {
				return;
			}
			var range = selection.getRangeAt(0);

			// 判断选区内容是否在编辑内容之内
			var $containerElem = this.getSelectionContainerElem(range);
			if (!$containerElem) {
				return;
			}
			var editor = this.editor;
			var $textElem = editor.$textElem;
			if ($textElem.isContain($containerElem)) {
				// 是编辑内容之内的
				this._currentRange = range;
			}
		},

		// 折叠选区
		collapseRange: function collapseRange(toStart) {
			if (toStart == null) {
				// 默认为 false
				toStart = false;
			}
			var range = this._currentRange;
			if (range) {
				range.collapse(toStart);
			}
		},

		// 选中区域的文字
		getSelectionText: function getSelectionText() {
			var range = this._currentRange;
			if (range) {
				return this._currentRange.toString();
			} else {
				return '';
			}
		},

		// 选区的 $Elem
		getSelectionContainerElem: function getSelectionContainerElem(range) {
			range = range || this._currentRange;
			var elem = void 0;
			if (range) {
				elem = range.commonAncestorContainer;
				return $(elem.nodeType === 1 ? elem : elem.parentNode);
			}
		},
		getSelectionStartElem: function getSelectionStartElem(range) {
			range = range || this._currentRange;
			var elem = void 0;
			if (range) {
				elem = range.startContainer;
				return $(elem.nodeType === 1 ? elem : elem.parentNode);
			}
		},
		getSelectionEndElem: function getSelectionEndElem(range) {
			range = range || this._currentRange;
			var elem = void 0;
			if (range) {
				elem = range.endContainer;
				return $(elem.nodeType === 1 ? elem : elem.parentNode);
			}
		},

		// 选区是否为空
		isSelectionEmpty: function isSelectionEmpty() {
			var range = this._currentRange;
			if (range && range.startContainer) {
				if (range.startContainer === range.endContainer) {
					if (range.startOffset === range.endOffset) {
						return true;
					}
				}
			}
			return false;
		},

		// 恢复选区
		restoreSelection: function restoreSelection() {
			var selection = window.getSelection();
			selection.removeAllRanges();
			selection.addRange(this._currentRange);
		},

		// 创建一个空白（即 &#8203 字符）选区
		createEmptyRange: function createEmptyRange() {
			var editor = this.editor;
			var range = this.getRange();
			var $elem = void 0;

			if (!range) {
				// 当前无 range
				return;
			}
			if (!this.isSelectionEmpty()) {
				// 当前选区必须没有内容才可以
				return;
			}

			try {
				// 目前只支持 webkit 内核
				if (UA.isWebkit()) {
					// 插入 &#8203
					editor.cmd.do('insertHTML', '&#8203;');
					// 修改 offset 位置
					range.setEnd(range.endContainer, range.endOffset + 1);
					// 存储
					this.saveRange(range);
				} else {
					$elem = $('<strong>&#8203;</strong>');
					editor.cmd.do('insertElem', $elem);
					this.createRangeByElem($elem, true);
				}
			} catch (ex) {
				// 部分情况下会报错，兼容一下
			}
		},

		// 根据 $Elem 设置选区
		createRangeByElem: function createRangeByElem($elem, toStart, isContent) {
			// $elem - 经过封装的 elem
			// toStart - true 开始位置，false 结束位置
			// isContent - 是否选中Elem的内容
			if (!$elem.length) {
				return;
			}

			var elem = $elem[0];
			var range = document.createRange();

			if (isContent) {
				range.selectNodeContents(elem);
			} else {
				range.selectNode(elem);
			}

			if (typeof toStart === 'boolean') {
				range.collapse(toStart);
			}

			// 存储 range
			this.saveRange(range);
		}
	};

	/*
	    上传进度条
	*/

	function Progress(editor) {
		this.editor = editor;
		this._time = 0;
		this._isShow = false;
		this._isRender = false;
		this._timeoutId = 0;
		this.$textContainer = editor.$textContainerElem;
		this.$bar = $('<div class="w-e-progress"></div>');
	}

	Progress.prototype = {
		constructor: Progress,

		show: function show(progress) {
			var _this = this;

			// 状态处理
			if (this._isShow) {
				return;
			}
			this._isShow = true;

			// 渲染
			var $bar = this.$bar;
			if (!this._isRender) {
				var $textContainer = this.$textContainer;
				$textContainer.append($bar);
			} else {
				this._isRender = true;
			}

			// 改变进度（节流，100ms 渲染一次）
			if (Date.now() - this._time > 100) {
				if (progress <= 1) {
					$bar.css('width', progress * 100 + '%');
					this._time = Date.now();
				}
			}

			// 隐藏
			var timeoutId = this._timeoutId;
			if (timeoutId) {
				clearTimeout(timeoutId);
			}
			timeoutId = setTimeout(function() {
				_this._hide();
			}, 500);
		},

		_hide: function _hide() {
			var $bar = this.$bar;
			$bar.remove();

			// 修改状态
			this._time = 0;
			this._isShow = false;
			this._isRender = false;
		}
	};

	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function(obj) {
		return typeof obj;
	} : function(obj) {
		return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" :
			typeof obj;
	};

	/*
	 上传视频
	 */

	// 构造函数
	function UploadVideo(editor) {
		this.editor = editor;
	}

	// 原型
	UploadVideo.prototype = {
		constructor: UploadVideo,
		// 根据 debug 弹出不同的信息
		_alert: function _alert(alertInfo, debugInfo) {
			var editor = this.editor;
			var debug = editor.config.debug;
			// var debug = true;
			var customAlert = editor.config.customAlert;

			if (debug) {
				throw new Error('wangEditor: ' + (debugInfo || alertInfo));
			} else {
				if (customAlert && typeof customAlert === 'function') {
					customAlert(alertInfo);
				} else {
					alert(alertInfo);
				}
			}
		},





		// 上传视频
		uploadVideo: function uploadVideo(files) {
			var _this3 = this;

			if (!files || !files.length) {
				return;
			}

			// ------------------------------ 获取配置信息 ------------------------------
			var editor = this.editor;
			var config = editor.config;
			var uploadImgServer = config.uploadImgServer;
			// var uploadImgShowBase64 = config.uploadImgShowBase64;

			var maxSize = 500 * 1024 * 1024; //500M
			var maxSizeM = maxSize / 1000 / 1000;
			var maxLength = 1;
			var uploadFileName ='file';
			var uploadImgParams = config.uploadImgParams || {};
			var uploadImgParamsWithUrl = config.uploadImgParamsWithUrl;
			var uploadImgHeaders = config.uploadImgHeaders || {};
			var hooks = config.uploadImgHooks || {};
			var timeout = 5 * 60 * 1000; //5 min
			var withCredentials = config.withCredentials;
			if (withCredentials == null) {
				withCredentials = false;
			}

			// ------------------------------ 验证文件信息 ------------------------------
			var resultFiles = [];
			var errInfo = [];
			arrForEach(files, function(file) {
				var name = file.name;
				var size = file.size;

				// chrome 低版本 name === undefined
				if (!name || !size) {
					return;
				}

				if (/\.(mp4)$/i.test(name) === false) {
					// 后缀名不合法，不是图片
					errInfo.push('\u3010' + name + '\u3011\u4E0D\u662F\u56FE\u7247');
					return;
				}
				if (maxSize < size) {
					// 上传图片过大
					errInfo.push('\u3010' + name + '\u3011\u5927\u4E8E ' + maxSizeM + 'M');
					return;
				}

				// 验证通过的加入结果列表
				resultFiles.push(file);
			});
			// 抛出验证信息
			if (errInfo.length) {
				this._alert('视频验证未通过: \n' + errInfo.join('\n'));
				return;
			}
			if (resultFiles.length > maxLength) {
				this._alert('一次最多上传' + maxLength + '个视频');
				return;
			}

			// ------------------------------ 自定义上传 ------------------------------
			// 添加视频数据
			var formdata = new FormData();
			arrForEach(resultFiles, function(file) {
				var name = uploadFileName || file.name;
				formdata.append(name, file);
			});

			// ------------------------------ 上传视频 ------------------------------
			if (uploadImgServer && typeof uploadImgServer === 'string') {
				// 添加参数
				var uploadImgServerArr = uploadImgServer.split('#');
				uploadImgServer = uploadImgServerArr[0];
				var uploadImgServerHash = uploadImgServerArr[1] || '';
				objForEach(uploadImgParams, function(key, val) {
					val = encodeURIComponent(val);

					// 第一，将参数拼接到 url 中
					if (uploadImgParamsWithUrl) {
						if (uploadImgServer.indexOf('?') > 0) {
							uploadImgServer += '&';
						} else {
							uploadImgServer += '?';
						}
						uploadImgServer = uploadImgServer + key + '=' + val;
					}

					// 第二，将参数添加到 formdata 中
					formdata.append(key, val);
				});
				if (uploadImgServerHash) {
					uploadImgServer += '#' + uploadImgServerHash;
				}

				// 定义 xhr
				var xhr = new XMLHttpRequest();
				xhr.open('POST', uploadImgServer);

				// 设置超时
				xhr.timeout = timeout;
				xhr.ontimeout = function() {
					// hook - timeout
					if (hooks.timeout && typeof hooks.timeout === 'function') {
						hooks.timeout(xhr, editor);
					}

					_this3._alert('上传图片超时');
				};

				// 监控 progress
				if (xhr.upload) {
					xhr.upload.onprogress = function(e) {
						var percent = void 0;
						// 进度条
						var progressBar = new Progress(editor);
						if (e.lengthComputable) {
							percent = e.loaded / e.total;
							progressBar.show(percent);
						}
					};
				}

				// 返回数据
				xhr.onreadystatechange = function() {
					var result = void 0;
					if (xhr.readyState === 4) {
						if (xhr.status < 200 || xhr.status >= 300) {
							// hook - error
							if (hooks.error && typeof hooks.error === 'function') {
								hooks.error(xhr, editor);
							}

							// xhr 返回状态错误
							_this3._alert('上传视频发生错误',
								'\u4E0A\u4F20\u56FE\u7247\u53D1\u751F\u9519\u8BEF\uFF0C\u670D\u52A1\u5668\u8FD4\u56DE\u72B6\u6001\u662F ' +
								xhr.status);
							return;
						}

						result = xhr.responseText;
						if ((typeof result === 'undefined' ? 'undefined' : _typeof(result)) !== 'object') {
							try {
								result = JSON.parse(result);
							} catch (ex) {
								// hook - fail
								if (hooks.fail && typeof hooks.fail === 'function') {
									hooks.fail(xhr, editor, result);
								}

								_this3._alert('上传视频失败', '上传视频返回结果错误，返回结果是: ' + result);
								return;
							}
						}
						if (!hooks.customInsert && result.errno != '0') {
							// hook - fail
							if (hooks.fail && typeof hooks.fail === 'function') {
								hooks.fail(xhr, editor, result);
							}

							// 数据错误
							_this3._alert('上传视频失败', '上传视频返回结果错误，返回结果 errno=' + result.errno);
						} else {
							if (hooks.customInsert && typeof hooks.customInsert === 'function') {
								// 使用者自定义插入方法
								// var _video_src = ' <video class="video-js" controls preload="auto" data-setup="{}"><source src="' + result.obj + '" type="video/mp4"></video>'
								editor.cmd.do('insertHTML', '<video src="' + result.message +
									'" style="width:100%" controls autobuffer />');
								_this3._alert("上传视频成功")
								// hooks.customInsert(_this3.insertLinkImg.bind(_this3), result, editor);
							} else {
								// 将视频插入编辑器
								var data = result.data || [];
								data.forEach(function(link) {
									// _this3.insertLinkImg(link);
									editor.cmd.do('insertHTML', '<video src="' + link +
										'" style="width:50%" controls autobuffer />');
								});
							}

							// hook - success
							if (hooks.success && typeof hooks.success === 'function') {
								hooks.success(xhr, editor, result);
							}
						}
					}
				};

				// hook - before
				if (hooks.before && typeof hooks.before === 'function') {
					var beforeResult = hooks.before(xhr, editor, resultFiles);
					if (beforeResult && (typeof beforeResult === 'undefined' ? 'undefined' : _typeof(beforeResult)) === 'object') {
						if (beforeResult.prevent) {
							// 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
							this._alert(beforeResult.msg);
							return;
						}
					}
				}

				// 自定义 headers
				objForEach(uploadImgHeaders, function(key, val) {
					xhr.setRequestHeader(key, val);
				});

				// 跨域传 cookie
				xhr.withCredentials = withCredentials;

				// 发送请求
				xhr.send(formdata);

				// 注意，要 return 。不去操作接下来的 base64 显示方式
				return;
			}
		}
	};


	/*
	    上传图片
	*/

	// 构造函数
	function UploadImg(editor) {
		this.editor = editor;
	}

	// 原型
	UploadImg.prototype = {
		constructor: UploadImg,

		// 根据 debug 弹出不同的信息
		_alert: function _alert(alertInfo, debugInfo) {
			var editor = this.editor;
			var debug = editor.config.debug;
			var customAlert = editor.config.customAlert;

			if (debug) {
				throw new Error('wangEditor: ' + (debugInfo || alertInfo));
			} else {
				if (customAlert && typeof customAlert === 'function') {
					customAlert(alertInfo);
				} else {
					alert(alertInfo);
				}
			}
		},

		// 根据链接插入图片
		insertLinkImg: function insertLinkImg(link) {
			var _this2 = this;

			if (!link) {
				return;
			}
			var editor = this.editor;
			var config = editor.config;

			// 校验格式
			var linkImgCheck = config.linkImgCheck;
			var checkResult = void 0;
			if (linkImgCheck && typeof linkImgCheck === 'function') {
				checkResult = linkImgCheck(link);
				if (typeof checkResult === 'string') {
					// 校验失败，提示信息
					alert(checkResult);
					return;
				}
			}

			editor.cmd.do('insertHTML', '<img src="' + link + '" style="width:100px;"/>');

			// 验证图片 url 是否有效，无效的话给出提示
			var img = document.createElement('img');
			img.onload = function() {
				var callback = config.linkImgCallback;
				if (callback && typeof callback === 'function') {
					callback(link);
				}

				img = null;
			};
			img.onerror = function() {
				img = null;
				// 无法成功下载图片
				_this2._alert('插入图片错误',
					'wangEditor: \u63D2\u5165\u56FE\u7247\u51FA\u9519\uFF0C\u56FE\u7247\u94FE\u63A5\u662F "' + link +
					'"\uFF0C\u4E0B\u8F7D\u8BE5\u94FE\u63A5\u5931\u8D25');
				return;
			};
			img.onabort = function() {
				img = null;
			};
			img.src = link;
		},

		// 上传图片
		uploadImg: function uploadImg(files) {
			var _this3 = this;

			if (!files || !files.length) {
				return;
			}

			// ------------------------------ 获取配置信息 ------------------------------
			var editor = this.editor;
			var config = editor.config;
			var uploadImgServer = config.uploadImgServer;
			var uploadImgShowBase64 = config.uploadImgShowBase64;

			var maxSize = config.uploadImgMaxSize;
			var maxSizeM = maxSize / 1000 / 1000;
			var maxLength = config.uploadImgMaxLength || 10000;
			var uploadFileName = config.uploadFileName || '';
			var uploadImgParams = config.uploadImgParams || {};
			var uploadImgParamsWithUrl = config.uploadImgParamsWithUrl;
			var uploadImgHeaders = config.uploadImgHeaders || {};
			var hooks = config.uploadImgHooks || {};
			var timeout = config.uploadImgTimeout || 3000;
			var withCredentials = config.withCredentials;
			if (withCredentials == null) {
				withCredentials = false;
			}
			var customUploadImg = config.customUploadImg;

			if (!customUploadImg) {
				// 没有 customUploadImg 的情况下，需要如下两个配置才能继续进行图片上传
				if (!uploadImgServer && !uploadImgShowBase64) {
					return;
				}
			}

			// ------------------------------ 验证文件信息 ------------------------------
			var resultFiles = [];
			var errInfo = [];
			arrForEach(files, function(file) {
				var name = file.name;
				var size = file.size;

				// chrome 低版本 name === undefined
				if (!name || !size) {
					return;
				}

				if (/\.(jpg|jpeg|png|bmp|gif)$/i.test(name) === false) {
					// 后缀名不合法，不是图片
					errInfo.push('\u3010' + name + '\u3011\u4E0D\u662F\u56FE\u7247');
					return;
				}
				if (maxSize < size) {
					// 上传图片过大
					errInfo.push('\u3010' + name + '\u3011\u5927\u4E8E ' + maxSizeM + 'M');
					return;
				}

				// 验证通过的加入结果列表
				resultFiles.push(file);
			});
			// 抛出验证信息
			if (errInfo.length) {
				this._alert('图片验证未通过: \n' + errInfo.join('\n'));
				return;
			}
			if (resultFiles.length > maxLength) {
				this._alert('一次最多上传' + maxLength + '张图片');
				return;
			}

			// ------------------------------ 自定义上传 ------------------------------
			if (customUploadImg && typeof customUploadImg === 'function') {
				customUploadImg(resultFiles, this.insertLinkImg.bind(this));

				// 阻止以下代码执行
				return;
			}

			// 添加图片数据
			var formdata = new FormData();
			arrForEach(resultFiles, function(file) {
				var name = uploadFileName || file.name;
				formdata.append(name, file);
			});

			// ------------------------------ 上传图片 ------------------------------
			if (uploadImgServer && typeof uploadImgServer === 'string') {
				// 添加参数
				var uploadImgServerArr = uploadImgServer.split('#');
				uploadImgServer = uploadImgServerArr[0];
				var uploadImgServerHash = uploadImgServerArr[1] || '';
				objForEach(uploadImgParams, function(key, val) {
					val = encodeURIComponent(val);

					// 第一，将参数拼接到 url 中
					if (uploadImgParamsWithUrl) {
						if (uploadImgServer.indexOf('?') > 0) {
							uploadImgServer += '&';
						} else {
							uploadImgServer += '?';
						}
						uploadImgServer = uploadImgServer + key + '=' + val;
					}

					// 第二，将参数添加到 formdata 中
					formdata.append(key, val);
				});
				if (uploadImgServerHash) {
					uploadImgServer += '#' + uploadImgServerHash;
				}

				// 定义 xhr
				var xhr = new XMLHttpRequest();
				xhr.open('POST', uploadImgServer);

				// 设置超时
				xhr.timeout = timeout;
				xhr.ontimeout = function() {
					// hook - timeout
					if (hooks.timeout && typeof hooks.timeout === 'function') {
						hooks.timeout(xhr, editor);
					}

					_this3._alert('上传图片超时');
				};

				// 监控 progress
				if (xhr.upload) {
					xhr.upload.onprogress = function(e) {
						var percent = void 0;
						// 进度条
						var progressBar = new Progress(editor);
						if (e.lengthComputable) {
							percent = e.loaded / e.total;
							progressBar.show(percent);
						}
					};
				}

				// 返回数据
				xhr.onreadystatechange = function() {
					var result = void 0;
					if (xhr.readyState === 4) {
						if (xhr.status < 200 || xhr.status >= 300) {
							// hook - error
							if (hooks.error && typeof hooks.error === 'function') {
								hooks.error(xhr, editor);
							}

							// xhr 返回状态错误
							_this3._alert('上传图片发生错误',
								'\u4E0A\u4F20\u56FE\u7247\u53D1\u751F\u9519\u8BEF\uFF0C\u670D\u52A1\u5668\u8FD4\u56DE\u72B6\u6001\u662F ' +
								xhr.status);
							return;
						}

						result = xhr.responseText;
						if ((typeof result === 'undefined' ? 'undefined' : _typeof(result)) !== 'object') {
							try {
								result = JSON.parse(result);
							} catch (ex) {
								// hook - fail
								if (hooks.fail && typeof hooks.fail === 'function') {
									hooks.fail(xhr, editor, result);
								}

								_this3._alert('上传图片失败', '上传图片返回结果错误，返回结果是: ' + result);
								return;
							}
						}
						if (!hooks.customInsert && result.errno != '0') {
							// hook - fail
							if (hooks.fail && typeof hooks.fail === 'function') {
								hooks.fail(xhr, editor, result);
							}

							// 数据错误
							_this3._alert('上传图片失败', '上传图片返回结果错误，返回结果 errno=' + result.errno);
						} else {
							if (hooks.customInsert && typeof hooks.customInsert === 'function') {
								// 使用者自定义插入方法
								hooks.customInsert(_this3.insertLinkImg.bind(_this3), result, editor);
							} else {
								// 将图片插入编辑器
								var data = result.data || [];
								data.forEach(function(link) {
									_this3.insertLinkImg(link);
								});
							}

							// hook - success
							if (hooks.success && typeof hooks.success === 'function') {
								hooks.success(xhr, editor, result);
							}
						}
					}
				};

				// hook - before
				if (hooks.before && typeof hooks.before === 'function') {
					var beforeResult = hooks.before(xhr, editor, resultFiles);
					if (beforeResult && (typeof beforeResult === 'undefined' ? 'undefined' : _typeof(beforeResult)) === 'object') {
						if (beforeResult.prevent) {
							// 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
							this._alert(beforeResult.msg);
							return;
						}
					}
				}

				// 自定义 headers
				objForEach(uploadImgHeaders, function(key, val) {
					xhr.setRequestHeader(key, val);
				});

				// 跨域传 cookie
				xhr.withCredentials = withCredentials;

				// 发送请求
				xhr.send(formdata);

				// 注意，要 return 。不去操作接下来的 base64 显示方式
				return;
			}

			// ------------------------------ 显示 base64 格式 ------------------------------
			if (uploadImgShowBase64) {
				arrForEach(files, function(file) {
					var _this = _this3;
					var reader = new FileReader();
					reader.readAsDataURL(file);
					reader.onload = function() {
						_this.insertLinkImg(this.result);
					};
				});
			}
		}
	};

	/*
	    编辑器构造函数
	*/

	// id，累加
	var editorId = 1;

	// 构造函数
	function Editor(toolbarSelector, textSelector) {
		if (toolbarSelector == null) {
			// 没有传入任何参数，报错
			throw new Error('错误：初始化编辑器时候未传入任何参数，请查阅文档');
		}
		// id，用以区分单个页面不同的编辑器对象
		this.id = 'wangEditor-' + editorId++;

		this.toolbarSelector = toolbarSelector;
		this.textSelector = textSelector;

		// 自定义配置
		this.customConfig = {};
	}

	// 修改原型
	Editor.prototype = {
		constructor: Editor,

		// 初始化配置
		_initConfig: function _initConfig() {
			// _config 是默认配置，this.customConfig 是用户自定义配置，将它们 merge 之后再赋值
			var target = {};
			this.config = Object.assign(target, config, this.customConfig);

			// 将语言配置，生成正则表达式
			var langConfig = this.config.lang || {};
			var langArgs = [];
			objForEach(langConfig, function(key, val) {
				// key 即需要生成正则表达式的规则，如“插入链接”
				// val 即需要被替换成的语言，如“insert link”
				langArgs.push({
					reg: new RegExp(key, 'img'),
					val: val

				});
			});
			this.config.langArgs = langArgs;
		},

		// 初始化 DOM
		_initDom: function _initDom() {
			var _this = this;

			var toolbarSelector = this.toolbarSelector;
			var $toolbarSelector = $(toolbarSelector);
			var textSelector = this.textSelector;

			var config$$1 = this.config;
			var zIndex = config$$1.zIndex;

			// 定义变量
			var $toolbarElem = void 0,
				$textContainerElem = void 0,
				$textElem = void 0,
				$children = void 0;

			if (textSelector == null) {
				// 只传入一个参数，即是容器的选择器或元素，toolbar 和 text 的元素自行创建
				$toolbarElem = $('<div></div>');
				$textContainerElem = $('<div></div>');

				// 将编辑器区域原有的内容，暂存起来
				$children = $toolbarSelector.children();

				// 添加到 DOM 结构中
				$toolbarSelector.append($toolbarElem).append($textContainerElem);

				// 自行创建的，需要配置默认的样式
				$toolbarElem.css('background-color', '#f1f1f1').css('border', '1px solid #ccc');
				$textContainerElem.css('border', '1px solid #ccc').css('border-top', 'none').css('height', '300px');
			} else {
				// toolbar 和 text 的选择器都有值，记录属性
				$toolbarElem = $toolbarSelector;
				$textContainerElem = $(textSelector);
				// 将编辑器区域原有的内容，暂存起来
				$children = $textContainerElem.children();
			}

			// 编辑区域
			$textElem = $('<div></div>');
			$textElem.attr('contenteditable', 'true').css('width', '100%').css('height', '100%');

			// 初始化编辑区域内容
			if ($children && $children.length) {
				$textElem.append($children);
			} else {
				$textElem.append($('<p><br></p>'));
			}

			// 编辑区域加入DOM
			$textContainerElem.append($textElem);

			// 设置通用的 class
			$toolbarElem.addClass('w-e-toolbar');
			$textContainerElem.addClass('w-e-text-container');
			$textContainerElem.css('z-index', zIndex);
			$textElem.addClass('w-e-text');

			// 添加 ID
			var toolbarElemId = getRandom('toolbar-elem');
			$toolbarElem.attr('id', toolbarElemId);
			var textElemId = getRandom('text-elem');
			$textElem.attr('id', textElemId);

			// 记录属性
			this.$toolbarElem = $toolbarElem;
			this.$textContainerElem = $textContainerElem;
			this.$textElem = $textElem;
			this.toolbarElemId = toolbarElemId;
			this.textElemId = textElemId;

			// 绑定 onchange
			$textContainerElem.on('click keyup', function() {
				_this.change && _this.change();
			});
			$toolbarElem.on('click', function() {
				this.change && this.change();
			});

			//绑定 onfocus 与 onblur 事件
			if (config$$1.onfocus || config$$1.onblur) {
				// 当前编辑器是否是焦点状态
				this.isFocus = false;

				$(document).on('click', function(e) {
					//判断当前点击元素是否在编辑器内
					var isChild = $toolbarSelector.isContain($(e.target));

					if (!isChild) {
						if (_this.isFocus) {
							_this.onblur && _this.onblur();
						}
						_this.isFocus = false;
					} else {
						if (!_this.isFocus) {
							_this.onfocus && _this.onfocus();
						}
						_this.isFocus = true;
					}
				});
			}
		},

		// 封装 command
		_initCommand: function _initCommand() {
			this.cmd = new Command(this);
		},

		// 封装 selection range API
		_initSelectionAPI: function _initSelectionAPI() {
			this.selection = new API(this);
		},

		// 添加图片上传
		_initUploadImg: function _initUploadImg() {
			this.uploadImg = new UploadImg(this);
		},

		// 添加视频上传
		_initUploadVideo: function _initUploadVideo() {
			this.uploadVideo = new UploadVideo(this);
		},

		// 初始化菜单
		_initMenus: function _initMenus() {
			this.menus = new Menus(this);
			this.menus.init();
		},

		// 添加 text 区域
		_initText: function _initText() {
			this.txt = new Text(this);
			this.txt.init();
		},

		// 初始化选区，将光标定位到内容尾部
		initSelection: function initSelection(newLine) {
			var $textElem = this.$textElem;
			var $children = $textElem.children();
			if (!$children.length) {
				// 如果编辑器区域无内容，添加一个空行，重新设置选区
				$textElem.append($('<p><br></p>'));
				this.initSelection();
				return;
			}

			var $last = $children.last();

			if (newLine) {
				// 新增一个空行
				var html = $last.html().toLowerCase();
				var nodeName = $last.getNodeName();
				if (html !== '<br>' && html !== '<br\/>' || nodeName !== 'P') {
					// 最后一个元素不是 <p><br></p>，添加一个空行，重新设置选区
					$textElem.append($('<p><br></p>'));
					this.initSelection();
					return;
				}
			}

			this.selection.createRangeByElem($last, false, true);
			this.selection.restoreSelection();
		},

		// 绑定事件
		_bindEvent: function _bindEvent() {
			// -------- 绑定 onchange 事件 --------
			var onChangeTimeoutId = 0;
			var beforeChangeHtml = this.txt.html();
			var config$$1 = this.config;

			// onchange 触发延迟时间
			var onchangeTimeout = config$$1.onchangeTimeout;
			onchangeTimeout = parseInt(onchangeTimeout, 10);
			if (!onchangeTimeout || onchangeTimeout <= 0) {
				onchangeTimeout = 200;
			}

			var onchange = config$$1.onchange;
			if (onchange && typeof onchange === 'function') {
				// 触发 change 的有三个场景：
				// 1. $textContainerElem.on('click keyup')
				// 2. $toolbarElem.on('click')
				// 3. editor.cmd.do()
				this.change = function() {
					// 判断是否有变化
					var currentHtml = this.txt.html();

					if (currentHtml.length === beforeChangeHtml.length) {
						// 需要比较每一个字符
						if (currentHtml === beforeChangeHtml) {
							return;
						}
					}

					// 执行，使用节流
					if (onChangeTimeoutId) {
						clearTimeout(onChangeTimeoutId);
					}
					onChangeTimeoutId = setTimeout(function() {
						// 触发配置的 onchange 函数
						onchange(currentHtml);
						beforeChangeHtml = currentHtml;
					}, onchangeTimeout);
				};
			}

			// -------- 绑定 onblur 事件 --------
			var onblur = config$$1.onblur;
			if (onblur && typeof onblur === 'function') {
				this.onblur = function() {
					var currentHtml = this.txt.html();
					onblur(currentHtml);
				};
			}

			// -------- 绑定 onfocus 事件 --------
			var onfocus = config$$1.onfocus;
			if (onfocus && typeof onfocus === 'function') {
				this.onfocus = function() {
					onfocus();
				};
			}
		},

		// 创建编辑器
		create: function create() {
			// 初始化配置信息
			this._initConfig();

			// 初始化 DOM
			this._initDom();

			// 封装 command API
			this._initCommand();

			// 封装 selection range API
			this._initSelectionAPI();

			// 添加 text
			this._initText();

			// 初始化菜单
			this._initMenus();

			// 添加 图片上传
			this._initUploadImg();

			// 添加 视频上传
			this._initUploadVideo();

			// 初始化选区，将光标定位到内容尾部
			this.initSelection(true);

			// 绑定事件
			this._bindEvent();
		},

		// 解绑所有事件（暂时不对外开放）
		_offAllEvent: function _offAllEvent() {
			$.offAll();
		}
	};

	// 检验是否浏览器环境
	try {
		document;
	} catch (ex) {
		throw new Error('请在浏览器环境下运行');
	}

	// polyfill
	polyfill();

	// 这里的 `inlinecss` 将被替换成 css 代码的内容，详情可去 ./gulpfile.js 中搜索 `inlinecss` 关键字
	var inlinecss =
		'.w-e-toolbar,.w-e-text-container,.w-e-menu-panel {  padding: 0;  margin: 0;  box-sizing: border-box;}.w-e-toolbar *,.w-e-text-container *,.w-e-menu-panel * {  padding: 0;  margin: 0;  box-sizing: border-box;}.w-e-clear-fix:after {  content: "";  display: table;  clear: both;}.w-e-toolbar .w-e-droplist {  position: absolute;  left: 0;  top: 0;  background-color: #fff;  border: 1px solid #f1f1f1;  border-right-color: #ccc;  border-bottom-color: #ccc;}.w-e-toolbar .w-e-droplist .w-e-dp-title {  text-align: center;  color: #999;  line-height: 2;  border-bottom: 1px solid #f1f1f1;  font-size: 13px;}.w-e-toolbar .w-e-droplist ul.w-e-list {  list-style: none;  line-height: 1;}.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item {  color: #333;  padding: 5px 0;}.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item:hover {  background-color: #f1f1f1;}.w-e-toolbar .w-e-droplist ul.w-e-block {  list-style: none;  text-align: left;  padding: 5px;}.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item {  display: inline-block;  *display: inline;  *zoom: 1;  padding: 3px 5px;}.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item:hover {  background-color: #f1f1f1;}@font-face {  font-family: \'w-e-icon\';  src: 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.w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.gray {  color: #999;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.red {  color: #c24f4a;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button:hover {  background-color: #f1f1f1;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content .w-e-button-container:after {  content: "";  display: table;  clear: both;}.w-e-text-container .w-e-panel-container .w-e-emoticon-container .w-e-item {  cursor: pointer;  font-size: 18px;  padding: 0 3px;  display: inline-block;  *display: inline;  *zoom: 1;}.w-e-text-container .w-e-panel-container .w-e-up-img-container {  text-align: center;}.w-e-text-container .w-e-panel-container .w-e-up-img-container .w-e-up-btn {  display: inline-block;  *display: inline;  *zoom: 1;  color: #999;  cursor: pointer;  font-size: 60px;  line-height: 1;}.w-e-text-container .w-e-panel-container .w-e-up-img-container .w-e-up-btn:hover {  color: #333;}.w-e-text-container {  position: relative;}.w-e-text-container .w-e-progress {  position: absolute;  background-color: #1e88e5;  bottom: 0;  left: 0;  height: 1px;}.w-e-text {  padding: 0 10px;  overflow-y: scroll;}.w-e-text p,.w-e-text h1,.w-e-text h2,.w-e-text h3,.w-e-text h4,.w-e-text h5,.w-e-text table,.w-e-text pre {  margin: 10px 0;  line-height: 1.5;}.w-e-text ul,.w-e-text ol {  margin: 10px 0 10px 20px;}.w-e-text blockquote {  display: block;  border-left: 8px solid #d0e5f2;  padding: 5px 10px;  margin: 10px 0;  line-height: 1.4;  font-size: 100%;  background-color: #f1f1f1;}.w-e-text code {  display: inline-block;  *display: inline;  *zoom: 1;  background-color: #f1f1f1;  border-radius: 3px;  padding: 3px 5px;  margin: 0 3px;}.w-e-text pre code {  display: block;}.w-e-text table {  border-top: 1px solid #ccc;  border-left: 1px solid #ccc;}.w-e-text table td,.w-e-text table th {  border-bottom: 1px solid #ccc;  border-right: 1px solid #ccc;  padding: 3px 5px;}.w-e-text table th {  border-bottom: 2px solid #ccc;  text-align: center;}.w-e-text:focus {  outline: none;}.w-e-text img {  cursor: pointer;}.w-e-text img:hover {  box-shadow: 0 0 5px #333;}';

	// 将 css 代码添加到 <style> 中
	var style = document.createElement('style');
	style.type = 'text/css';
	style.innerHTML = inlinecss;
	document.getElementsByTagName('HEAD').item(0).appendChild(style);

	// 返回
	var index = window.wangEditor || Editor;

	return index;

})))
